Timeline of the SARS-CoV-2 Omicron variant

This timeline of the SARS-CoV-2 Omicron variant (November 2021 – February 2022) is a dynamic list, and as such may never satisfy criteria of completeness. Some events may only be fully understood and/or discovered in retrospect.

Spike protein with mutations highlighted, looking down onto the receptor-binding domain
Spike protein with mutations highlighted, looking at the side of the protein
The extensive mutations of its spike proteins make for the Omicron variant. Mutation data from WHO;[1] structure from PDB: 6VYB​.[2]

Main article: SARS-CoV-2 Omicron variant

November 2021

4 November

South African scientists begin seeing samples where PCR tests have S-gene target failure (which occurs in a few variants, but not in Delta which had by far dominated in the country in October), alerting them to a change in epidemiology.[3]

8 November

The first confirmed sample of what would eventually be named the Omicron variant by the World Health Organization (WHO) is collected in South Africa.[4][5][6]

9 November

Other samples of the Omicron variant are collected in Botswana by South African scientists[7][8] under the aegis of Network for Genomic Surveillance South Africa (NGS-SA).

14–23 November

More than 70 percent of sequenced samples from Gauteng province in South Africa are Omicron, indicating that it already has become the dominant variant in the province.[9]

24 November

South Africa makes its first report of B.1.1.529 (as it is scientifically known) to WHO,[1] based on samples that had been collected from 14 to 16 November.[10]

25 November

The variation first comes to public notice[11] at a virtual press conference called by the Health Department of South Africa. Richard Lessells, an infectious-diseases physician at the University of KwaZulu-Natal,[12] remarked that "There's a lot we don't understand about this variant... The mutation profile gives us concern, but now we need to do the work to understand the significance of this variant and what it means for the response to the pandemic." Professor Penny Moore, a virologist at the University of the Witwatersrand[13] said of the pace of this research that "we're flying at warp speed".[7] At this point there are 87 cases in five countries and an estimated 990 probable cases, with the most confirmed cases in South Africa at 77.[14]

26 November

On 26 November at an emergency meeting in Geneva, Switzerland WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution designated PANGO lineage B.1.1.529 a variant of concern (VOC) and gave it the designation Omicron (skipping Nu and Xi, the next letters in the Greek alphabet in keeping with its nomenclature protocol introduced for the Delta variant).[15][16][17] At this point there are 96 confirmed cases worldwide in South Africa, Botswana,[18] England,[19] Hong Kong,[20] Italy,[21] Israel,[22] and Belgium,[23] and 2 probable cases in Germany[24] and 1 in Czech Republic.[25][26]

27 November

The first two cases in the United Kingdom are announced. Additionally it was announced via Twitter that Malawi, Mozambique, Zambia and Angola were to be added to the UK's Red List as of Sunday at 4:00 a.m. GMT[27] genomic sequencing having been performed overnight, thus joining South Africa, Botswana, Lesotho, Eswatini, Zimbabwe, and Namibia.[28] Furthermore, Switzerland adds the UK to its "at risk" list along with other countries with cases.[29]

28 November

Two Danish returnees from South Africa test positive,[30] and another two people with recent travel in Nigeria test positive in Ottawa, Canada. A third case is detected in the UK, but the individual concerned, who had traveled from southern Africa, is no longer in the country, instigating high-level contact tracing.[31] Israel bans entry to all foreign nationals and puts travel to fifty African countries on its red list. Morocco closes its borders for two weeks.[32] [33]

The first 13 cases are identified among 61 SARS-CoV-2 cases from two flights[34] from South Africa to The Netherlands on November 26; the passengers involved, numbering approximately 624, were in mid-flight when EU restrictions were imposed.[35][36] Five additional cases among these passengers were confirmed a week later.[37]

Two cases were detected in Sydney, Australia. Both people had landed in Sydney the previous day, and had traveled from southern Africa to Sydney via Doha, Qatar. The two people, who were fully vaccinated, entered isolation; 12 other travelers from southern Africa also entered quarantine for fourteen days, while about 260 other passengers and crew on the flight have been directed to isolate.[38]

South African President Cyril Ramaphosa addressed the Nation at 20:00 SAST.[39][40] Ramaphosa highlighted a few key points in his address.[41] Firstly he explained the arrival of the new Omicron Variant and stated that over the next 2 weeks, South African scientists will be working on understand and testing the effectiveness of vaccines against this new Variant.[42] He called for nations who closed borders to reopen then cited that the closure "is not informed by science, nor will it be effective in preventing the spread of the Omicron coronavirus variant".[43][44] Secondly, he called for the country to vaccinate.[45] Finally he announced the country would not go into lockdown, but introduced a minor curfew and a limit on gathering.[46] A further address is set to take place next week on 5 December 2021 to evaluate whether a lockdown is needed.[47][48]

The affairs ministry of South Africa said that it was dismayed by its 'punishment' for discovering the variant and that 'excellent science should be applauded and not punished'.[49]

29 November

Australia records its third case of the variant in a national repatriated from Johannesburg. He was undertaking mandatory isolation in the Howard Springs quarantine facility in the Northern Territory.[50] The first six cases are identified in Scotland (bringing the total in the UK to nine): four in the Lanarkshire area and two in Greater Glasgow and Clyde area.[51] Spain and Sweden report their first cases, the latter from a sample taken less than a week prior from a traveler from South Africa.[52] India announces that a portion of the stock of its own vaccines (under the aegis of COVAX) shall be shipped to afflicted African nations.[53] At a special session of the World Health Assembly WHO presents the variant as having a very high global risk.[54]

30 November

Ecuador and Japan impose international travel restrictions. The U.S. also tightens its restrictions. Japan reports its first case as does France (on the Indian Ocean island of Réunion). China's leader Xi Jinping pledges 30m doses of its own vaccine to Africa by way of addressing global vaccine inequity, with 400m to follow (produced by Chinese-owned companies in Africa).[55] In The Netherlands, two additional cases are identified in older samples that were retroactively checked for the new variant, dating back to 19 and 23 November.

December 2021

1 December
  • United States,[56] Saudi Arabia,[57] Ghana, South Korea, Norway and Nigeria announce their first cases. The Dutch health ministry announces that its first cases date back to November 19 and 23. WHO advises the COVID-vulnerable, including those over 60, not to travel,[58][59] and more than fifty countries have implemented new travel restrictions.[60]
  • Ireland announces its first case, apparently from community transmission.[61]
  • The Israeli Ministry of Health has confirmed cardiologist Dr. Elan Maor as the country's third Omicron case. Maor had previously attended the PCR London Valves 2021 conference at London's ExCeL London in late November 2021.[62][63]

2 December

United Arab Emirates announces its first cases. The number of cases in South Africa has increased exponentially in the prior two weeks, with Omicron rapidly becoming the dominant strain.[64]

A case is found in the greater Paris, France region, reports BFM TV; the infected person had recently returned from Nigeria.[65] This is the first case in mainland France.[66] Iceland also reports its first case, a triply-vaccinated individual who had not traveled abroad;[67] Greece announces its first case (in Crete), an individual who had traveled to South Africa.[68] Finland reports its first case, an individual who had traveled from Sweden with a group.[69]

Singapore preliminarily reports its first two cases.[70] The U.S. reports its second case (and its first case of community transmission) in a Minnesota resident who in late November had attended an anime convention in New York City, Anime NYC 2021; vaccination had been required for attendance.[71] The event had 53,000 attendees, all of whom were urged to get tested (along with staff and exhibitors) inasmuch as authorities feared it as having been a superspreader event.[72][73][74]

3 December

Malaysia announced its first case of the variant. The case was detected on 26 November, a South African student entering the country to study at a private university.[75] There are now ten cases in the U.S., in California, Colorado, Minnesota, and New York, and in Hawaii, where the person had no recent travel history.[76] Réunion reported its second confirmed case. Both cases were linked to travel from mainland Africa.[77] More than a dozen cases have been found in the U.S. spread over at least ten states.[78]

4 December
  • The official number of cases in South Korea is now nine (after the initial first three). Officials fear that a church gathering of hundreds on 28 November may have been a superspreader event. Concurrently the country is undergoing a record Delta surge.[79]
  • Officials in Norway officially regard a corporate Christmas party held on 26 November as a superspreader event, being the single largest outbreak outside of South Africa. At least 14 people of the 120 participants were infected.[80] Ultimately 66 positive cases were identified, none of whom had received a booster.[81]
  • Israel confirms seven cases of the Omicron variant resulting from overseas travel including five from South Africa, one from Malawi, and one from the United Kingdom.[82]

5 December

Eight cases of community transmission, unrelated to each other, are reported in New York. A woman who recently traveled from South Africa becomes both New Jersey and Georgia's first confirmed case. Maryland has its first three cases, and Pennsylvania and Missouri one each. Nebraska's number of cases increases to six, all in its southeast.[83]

6 December

Fiji confirmed its first two cases of the variant. The two cases traveled from Nigeria arriving in the country from Hong Kong on 25 November.[84]

7 December

The Omicron variant features as such for the first time in the overview of WHO's weekly operational update, namely "Supporting Omicron variant detection and COVID-19 response in southern Africa." As of December 2, Botswana and South Africa have reported 19 and 172 Omicron variant cases, respectively, accounting for 62% of global cases. A surge team is being deployed. Globally, more than twenty countries have reported cases to date.[85]

8 December

Queensland, Australia health authorities detect the first case of the variant in the state, alongside the first identification ever of a genetically distinct 'Omicron-like' variant.[86]

WHO announces that the variant had been detected in 57 countries.[87] By this date, the CDC later confirms (on December 17) that 22 states of the U.S. have cases. "Among 43 cases with initial follow-up, one hospitalization and no deaths were reported."[88]

Pakistan reports its first suspected case.[89]

9 December

WHO announces that "Of 899,935 Covid-19 test samples sequenced and uploaded to the global Covid database in the last 60 days, 897,886 (99.8%) were confirmed to be Delta, while 713 (0.1%) were Omicron." Cases in South Africa rise by 110% in one week.[90] Cuba reports its first case, in a person who had traveled from Mozambique.[91]

10 December

Singapore detects its first case of community transmission, an airport frontline worker. In the U.S, more than 40 people have been found to be infected, more than 75% of whom had been vaccinated.[92]

11 December

Bangladesh reports its first two cases, female cricketers who had recently returned from Zimbabwe.[93] In the U.S. the variant is responsible for 2.9% of cases.[94]

12 December
  • 64 new cases are reported in New South Wales, Australia.[95]
  • Israel reports 20 new cases, bringing the total number of Omicron cases to 55.[96][97]

13 December

The first Briton infected with the Omicron variant dies;[98] the variant now accounts for 20% of the cases in the UK.[99] China reports its first case (a returnee from overseas),[100] in Tianjin.[101] Puerto Rico confirms its first case,[102] as does Pakistan.[103]

14 December

France reports 130 cases.[104] In England 20 cases are in hospital.[104] Studies continue to show that while current vaccines are not as effective against Omicron that boosters are beneficial nevertheless.[105]

Algeria reports its first case, a foreign national who entered Algeria on December 10 and tested positive at the Algiers International Airport.[106]

Israel has confirmed a total of 67 Omicron cases.[107]

15 December

Mainland China reports its second case, a returnee who had landed at Shanghai International Airport. The individual had had multiple negative nucleic acid tests whilst in standard quarantine in Guangzhou until testing positive. Indicative of a relatively low viral load, this sequence of events prompted concerns over possible community transmission.[108]

16 December
Omicron is now extant in all six WHO regions[109]

New Zealand confirmed its first case of the Omicron variant, an individual who arrived in Auckland from Germany via Dubai on December 10.[110]

Indonesia confirms its first case.[111] Malaysia reports its second case,[112] and Poland its first.[113]

Fifteen people are hospitalized in the UK.[113] The antibody treatment Evusheld produced by AstraZeneca is shown to retain neutralising activity against Omicron, whereas Regeneron's Ronapreve therapy proves to be less effective.[114]

Despite there being few confirmed cases, wastewater samples in Orange County, Florida test nearly 100% for Omicron.[115] Exactly six months after lifting its mask mandate, California reinstates it.[116] The State of Palestine reported its first three cases, in returnees from abroad.[117]

17 December

New Zealand has reported three more Omicron cases at the border. These cases were had arrived in Auckland from Dubai on December 11 and traveled to a managed isolation and quarantine in Rotorua on a bus chartered for international arrivals.[118]

In the U.S. modeling by the CDC presented to state health leaders projects that Omicron will peak in January 2022, the case load having increased seven-fold in one week. How Omicron and Delta will interact is not clear in these models, however, and furthermore the prospect of those major variants on top of influenza is of grave concern.[119] (A smaller Omicron surge in spring is also possible.)[120] As it is, the variant is projected to become the dominant strain within a week.[121]

The R number for Omicron in the UK is estimated to be between 3 and 5, Dr. Susan Hopkins, chief medical advisor at the UK Health Security Agency reported. The variant becomes the dominant strain in Scotland.[122] In Denmark it accounts for one-fifth of all cases,[123] and in Ireland 35%.[124]

Qatar reports its first four cases, imported from abroad.[125]

18 December
  • WHO reports that given community transmission the number of cases doubles every 1.5 to three days. The variant is now in 89 counties, and its severity profile remains unknown.[126]
  • Seven to ten percent of new confirmed coronavirus cases in France are suspected to be of the Omicron variant and the travel ban on the UK comes into force.[127]
  • Israel has reported 45 new cases, bringing the total number of Omicron cases to 134.[128]
  • Malaysia has confirmed 11 new cases of the Omicron variant, all resulting from overseas travel. These cases are connected to the 18 suspected cases dating back to 16 December.[129]
  • New Zealand has reported four new cases at the border, bringing the total number of Omicron cases in the country to eight.[130]
  • The Mayor of London Sadiq Khan, declares a major incident.[131][132]
  • In the United States, 80% of the COVID-19 cases in the Miami-Dade area (in Florida) are now of the Omicron variant, a situation regarded as "unprecedented". The first positive sample had been taken December 2.[133]

19 December
  • Netherlands enters lockdown, the first European country to do so due to Omicron.[134] Iran announces its first case.[135] The variant is now the dominant strain in Ontario, Canada, accounting for 51% of cases.[136]

20 December
  • 12 deaths cumulative of Omicron cases in the UK. Thailand reports its first locally transmitted case.[137][138] Peru reports its first four cases.[139]
  • Moderna announces that its mRNA-1273[137] "half-dose booster" elicits a 37-fold increase in antibodies compared with people who had received just two doses.[140][141]
  • CDC estimates that Omicron accounts for 73% of COVID-19 cases in the U.S., up from 3% the week prior.[142] It has now been identified in at least 30 states.[143]
  • A report by the Imperial College COVID-19 Response Team based on data from England, found that hospitalisation and asymptomatic infection indicators were not significantly associated with Omicron infection, suggesting at most limited changes in severity compared with Delta.[144]

24 December

Algeria reports its second confirmed case, concerns an Algerian national returning from a stay in South Africa.[145]

25 December

Airlines cancel more than 600 flights Christmas Eve, and hundreds on Christmas, due to severe staffing shortages. United Airlines cancels 185 of its mainline flights, 10% of its schedule, and Deutsche Lufthansa AG's robust holiday contingency plans were overwhelmed by the unexpected rise in sick leave. Railroads in Europe were also affected, albeit not to the same extent.[146] In the aggregate more than 4,500 flights worldwide are cancelled.[147]

Portugal announces that on 22 December Omicron had become the dominant strain, accounting for 65.5% of cases, and Malaysia detects its first case.[148] Also, the confirmed first case in Islamabad, the capital of Pakistan, is reported.[89]

26 December

Algeria has confirmed 2 new cases, in Algerian nationals returned from France and the United Kingdom.[149]

Omicron is in at least 115 countries.[150] The first cases are identified in Gaza Strip and Dominican Republic.[151]

27 December

Omicron becomes the dominant strain in Portugal.[152]

29 December
  • CDC revises its Omicron estimate from comprising 73% to 59% of all Covid cases in the U.S.[153]
  • Thailand identifies its first superspreader event.[154]
  • New Zealand reports its first community case.[155][156]

30 December

Algeria reports 12 new cases; 6 Algerian citizens and 2 nationals returning from France, 1 Briton and 3 Mauritanians.[157]

The second case of the Omicron variant has been confirmed in North Macedonia, in the town of Struga.[158]

31 December

Staffing shortages due to Omicron necessitates the temporary closure of numerous urgent care clinics in the U.S.[159] The Biden administration lifts a month-long travel ban on foreign national arriving via air from eight African countries -South Africa, Botswana, Zimbabwe, Namibia, Lesotho, Eswatini, Mozambique, and Malawi- effective 12:01 a.m. EST.[160]

Dr Tedros Adhanom Ghebreyesus, WHO Director-General, notes in his year-end remarks that "Narrow nationalism and vaccine hoarding by some countries have undermined equity and created the ideal conditions for the emergence of the Omicron variant, and the longer inequity continues, the higher the risks of the virus evolving in ways we can't prevent or predict".[161]

The UKHSA announced that as of 1 January 2022, Omicron would no longer be reported separately in the daily statistics because the variant of concern had become the dominant strain in England.[162]

January 2022

January 1

French Health officials acknowledged the Omicron variant as the country most dominant variant. President Macron warned that the following weeks would be "very difficult".[161]

January 3

South Korea reports the first two deaths of people who tested positive post mortem for Omicron.[163]

January 4

As per WHO, Omicron has emerged in 128 countries, and furthermore new studies suggest that it does not generally cause as severely pulmonary damage as prior variants.[164]

US COVID-19 cases reach 1,082,549, mainly due to the rapidity of Omicron's spread.[165]

A news article on Nature reports there are signals that Omicron does not multiply readily in lung tissue. The latest results could mean that "the virus establishes a very local infection in the upper airways and has less chance to go and wreak havoc in the lungs", which might make it easier "to hitch a ride on material expelled from the nose and mouth, allowing the virus to find new hosts".[166]

January 6

India records its first death, a 74-year-old diabetic man with other comorbidities.[167]

January 7

WHO announces that Omicron should not be described as "mild" given that the sheer scale of serious infections requiring hospitalization is overwhelming health systems worldwide.[168] Britain deploys 200 military personnel to assist London hospitals, including 20 doctors.[169]

Algeria detects 47 new cases; 29 cases from Algiers, 06 cases from Béjaïa, 01 cases from Bouïra, 11 cases from Constantine, bringing the total of confirmed cases to 63 cases.[170]

January 9

Mass testing begins in Tianjin, China, a major port city close to Beijing, after a cluster of twenty cases is discovered, of which at least two are of the Omicron variant.[171]

January 10

Peru register the highest rate of Covid-19 infections with 70,000 cases in a week, with Omicron variant being responsible for the third wave of infections.[172]

January 12

WHO projects that in six to eight weeks half the population of Europe will have caught the variant.[173] In the U.S. 98% of COVID-19 cases the week prior were of the Omicron variant.[174]

January 13

Algeria detects 82 new cases; 61 cases from Algiers, 11 cases from Blida, 5 cases in Bouïra, 3 cases from Hassi Messaoud and 1 case in Ain Defla and Laghouat, bringing the total of confirmed cases to 145 cases.[175]

January 14

US reported its peak number of infections by Omicron variant, US Presidential Chief Advisor, Dr. Anthony Fauci predicted that the Omicron cases would drop by the end of January.[176]

January 15

Beijing reports its first locally transmitted case, in the Haidian district.[177][178] Authorities have published a detailed account of the patient's activities dating back to December 31, quarantined his workplace and residential compound, and collected 2,430 testing samples from these two locations.[179]

January 17

In China health authorities said that their first ever recorded Omicron case could have come from a mail send from Canada.[180][181][182] However more than 16,500 tests of those who had contact or possible contact with the index case all came back negative.[183]

January 19

France reach 464,000 new Covid-19 cases with the Omicron variant rampant unabated, the country registered seven consecutive days surpassing daily 300,000 cases.[184]

January 20

The Pasteur Institute of Algeria (IPA) announced that it had recorded a total of 400 cases of the Omicron variant in Algeria, which represents 57% of the circulating variants.[185]

January 27

New Zealand has reported 34 new Omicron cases, bringing the total number of Omicron community cases to 90.[186]

January 28

New Zealand has reported 15 new Omicron cases, bringing the total number of Omicron community cases to 105.[187]

February 2022

8 February

Omicron is confirmed to be a zoonotic disease. In February 2022, the first confirmed case infecting a wild animal was confirmed by researchers at Pennsylvania State University in white-tailed deer in Staten Island, N.Y.[188]

24 February

The BA.2 subvariant accounts for more than a third of all cases globally.[189]

October 2022

13 October

The BA2.75.2 subvariant is observed to evade from neutralising antibodies in epidemiological samples. [190]

2023

On 9 January 2023 the European CDC said there was suggestive evidence the XBB.1.5 variant had a growth advantage; after becoming dominant in the USA, it might become dominant in Europe in the following months.[191]

References
  1. "Classification of Omicron (B.1.1.529): SARS-CoV-2 Variant of Concern". www.who.int.
  2. Walls, Alexandra C.; Park, Young-Jun; Tortorici, M. Alejandra; Wall, Abigail; McGuire, Andrew T.; Veesler, David (April 2020). "Structure, Function, and Antigenicity of the SARS-CoV-2 Spike Glycoprotein". Cell. 181 (2): 281–292.e6. doi:10.1016/j.cell.2020.02.058. PMC 7102599. PMID 32155444.
  3. Cowan, Kyle (29 November 2021). "Inside SA leg of Omicron variant discovery: A single test result, a missing gene, and an email". News24. Retrieved 2 December 2021.
  4. "Omicron becomes dominant variant in South Africa". The Guardian. 2 December 2021. Retrieved 2 December 2021.
  5. "SARS-CoV-2 Sequencing Update 1 December 2021" (PDF). South African National Institute for Communicable Diseases. Retrieved 2 December 2021.
  6. "Tracking of Variants". GISAID. Retrieved 2 December 2021.
  7. Callaway, Ewen (25 November 2021). "Heavily mutated coronavirus variant puts scientists on alert". Nature. 600 (7887): 21. Bibcode:2021Natur.600...21C. doi:10.1038/d41586-021-03552-w. PMID 34824381. S2CID 244660616.
  8. "Classification of Omicron (B.1.1.529): SARS-CoV-2 Variant of Concern". World Health Organization. 26 November 2021. Retrieved 26 November 2021.
  9. Whiteside, Philip (30 November 2021). "COVID-19: How the spread of Omicron went from patient zero to all around the globe". SkyNews. Retrieved 1 December 2021.
  10. Vaughan, Adam (27 November 2021). "Omicron: How dangerous is the new variant first found in South Africa?". NewScientist. Retrieved 1 December 2021.
  11. "New Covid variant: How worried should we be?". BBC News. 25 November 2021. Retrieved 25 November 2021.
  12. "Richard Lessells - Google Scholar". scholar.google.com. Retrieved 14 December 2021.
  13. "Penny Moore". The Conversation. 26 November 2015.
  14. "87 Omicron COVID-19 Variant of Concern Cases Confirmed". www.precisionvaccinations.com.
  15. "Fact Check-WHO skipped letters of Greek alphabet while naming COVID-19 variant Omicron". Reuters. November 27, 2021.
  16. World Health Organization (WHO) [@WHO] (26 November 2021). "The Technical Advisory Group on SARS-CoV-2 Virus Evolution met today to review what is known about the #COVID19 variant B.1.1.529. They advised WHO that it should be designated a Variant of Concern. WHO has named it Omicron, in line with naming protocols t.co/bSbVas9yds t.co/Gev1zIt1Ek" (Tweet). Archived from the original on 28 November 2021. Retrieved 28 November 2021 – via Twitter.
  17. Parekh, Marcus; Platt, Poppie; Team, Global Health Security; Barnes, Joe (26 November 2021). "Coronavirus latest news: EU suspends all flights to southern Africa over omicron Covid variant fears". The Telegraph. ISSN 0307-1235. Archived from the original on 2022-01-11. Retrieved 26 November 2021.
  18. "GISAID - hCov19 Variants". www.gisaid.org.
  19. Javid, Sajid [@sajidjavid] (27 November 2021). "We have been made aware by @UKHSA of two UK cases of the Omicron variant. The two cases are linked and there is a connection with travel to southern Africa. These individuals are self-isolating with their households while further testing and contact tracing is underway" (Tweet). Archived from the original on 28 November 2021. Retrieved 28 November 2021 – via Twitter.
  20. "CHP investigates six additional confirmed cases of COVID-19 and provides update on latest investigations on imported cases 12388 and 12404". www.info.gov.hk.
  21. "Covid, un caso di variante Omicron in Campania: isolati tutti i contatti". la Repubblica. November 27, 2021.
  22. "קורונה - משרד הבריאות". Telegram.
  23. "Genomic surveillance of SARS-CoV-2 in Belgium (Situation update – 26 of November 2021)" (PDF). 26 November 2021. Retrieved 14 December 2021.
  24. "2 Verdachtsfälle der neuen Omicron-Variante in Bayern bestätigt - Rückkehrer aus Südafrika sollen PCR-Test durchführen lassen, in Selbstquarantäne begeben und das Gesundheitsamt kontaktieren". November 27, 2021.
  25. Babiš, Andrej [@AndrejBabis] (27 November 2021). "Dovolím si korigovat média. Paní, která byla testovaná na novou mutaci, NEBYLA v Egyptě, ale na pobytu v Namibii a letěla zpět do ČR přes JAR a Dubaj. Výsledek jejího testu očekáváme, je teď v izolaci a trasují se všechny kontakty" (Tweet) (in Czech). Archived from the original on 27 November 2021. Retrieved 28 November 2021 – via Twitter.
  26. News, B. N. O. (November 26, 2021). "Tracking COVID-19 variant Omicron". {{cite web}}: |last= has generic name (help)
  27. Goillandeau, Martin (27 November 2021). "2 cases of Omicron variant detected in the UK, health secretary says". CNN. Archived from the original on 28 November 2021. Retrieved 28 November 2021.
  28. "Boris Johnson tightens rules on travel and mask-wearing over Omicron concerns". The Guardian. November 27, 2021.
  29. Swiss Embassy UK [@SwissEmbassyUK] (27 November 2021). "UPDATE - The UK has been added to Switzerland's risk country list. When boarding a plane and entering Switzerland, all persons travelling from the UK must present a negative COVID-19 test and quarantine for 10 days. Further information will follow on t.co/2BBu56C1mp t.co/x7i42O9vAU" (Tweet). Archived from the original on 27 November 2021. Retrieved 28 November 2021 – via Twitter.
  30. "Omicron coronavirus variant spreads with cases detected in Netherlands, Denmark, Australia". CNBC. Reuters. 28 November 2021. Retrieved 1 December 2021.
  31. "Covid: Third case of Omicron variant detected in the UK". BBC News. 28 November 2021. Retrieved 28 November 2021.
  32. "Israel seals borders and Morocco bans flights as Omicron Covid fears rise". The Guardian. November 28, 2021.
  33. Paas-Lang, Christian (28 November 2021). "Canada's first cases of the omicron coronavirus variant confirmed in Ottawa". CBC News. Retrieved 14 December 2021.
  34. "Omicron: How two flights to Europe may have spurred spread of new Covid variant". The Economic Times.
  35. Feigl-Ding, Eric [@DrEricDing] (28 November 2021). "BREAKING—13 #Omicron variant cases now confirmed from 61 #COVID19 cases among ~600 passengers on two flights from South Africa to Amsterdam 🇳🇱(that took off and was mid-air when EU travel limits added). Dutch government warns there will likely be more. t.co/K6XSGcnn9h t.co/CjMFccNmwT" (Tweet). Retrieved 28 November 2021 – via Twitter.
  36. "Covid: 13 test positive for Omicron after S Africa-Netherlands flights". BBC News. November 28, 2021.
  37. "Actuele informatie over COVID-19 | RIVM". www.rivm.nl (in Dutch). 4 December 2021. Retrieved 2021-12-06.
  38. "Travellers test positive to Omicron COVID-19 strain after arriving in Sydney from southern Africa, NSW Health says". ABC News. 2021-11-28. Archived from the original on 28 November 2021. Retrieved 2021-11-28.
  39. News, Eyewitness. "WATCH LIVE: President Ramaphosa to address the nation". ewn.co.za. Retrieved 2021-11-29. {{cite web}}: |last= has generic name (help)
  40. "WATCH: President Cyril Ramaphosa addresses the nation | eNCA". www.enca.com. Retrieved 2021-11-29.
  41. "Family meeting: Ramaphosa to address nation at 8pm". www.iol.co.za. Retrieved 2021-11-29.
  42. "Cyril Ramaphosa to address the nation on new Covid-19 variant". BusinessLIVE. Retrieved 2021-11-29.
  43. Felix, Jason. "Closing the door to South Africa won't stop Omicron variant from spreading globally - Ramaphosa". News24. Retrieved 2021-11-29.
  44. "FULL ADDRESS | SA remains on alert level 1 lockdown". TimesLIVE. Retrieved 2021-11-29.
  45. Staff Writer. "Ramaphosa to address South Africa on Sunday evening". Retrieved 2021-11-29.
  46. "SA stays on lockdown level 1 - Read President Cyril Ramaphosa's full speech". www.iol.co.za. Retrieved 2021-11-29.
  47. Illidge, Myles. "Family meeting tonight — What to expect from Ramaphosa's Omicron address". Retrieved 2021-11-29.
  48. "[WATCH LIVE] Ramaphosa updates SA on Covid-19 measures (8 pm)". CapeTalk. Retrieved 2021-11-29.
  49. "South Africa dismayed at 'punishment' for honesty over Omicron coronavirus variant". The Straits Times. 2021-11-28. ISSN 0585-3923. Retrieved 2021-12-02.
  50. "COVID-positive repatriation flight arrival to the Northern Territory tests positive to Omicron variant". ABC News. 2021-11-29. Retrieved 2021-11-29.
  51. "Omicron variant". gov.scot. Scottish Government. 29 November 2021. Retrieved 29 November 2021.
  52. "First Omicron cases confirmed in Spain, Sweden – latest updates". First Omicron cases confirmed in Spain, Sweden – latest updates.
  53. Chaudhury, Dipanjan Roy. "India announces vaccine support to Africa to fight Omicron". The Economic Times.
  54. "Omicron Covid variant poses very high global risk, says WHO". The Guardian. November 29, 2021.
  55. "Omicron: entry bans spread as China pledges 1bn jabs for Africa". The Guardian. November 30, 2021.
  56. "California confirms nation's first Omicron variant coronavirus case". Los Angeles Times. 2021-12-01. Retrieved 2021-12-02.
  57. "Saudi Arabia detects first case of COVID-19 Omicron variant in Kingdom". Al Arabiya English. December 1, 2021.
  58. Ambrose (now), Tom; Hall, Rachel; Belam, Martin; Lock (earlier), Samantha; Boffey, Daniel (2021-12-02). "Covid news: Omicron detected in US; UK reports 48,374 new cases and 171 deaths – as it happened". The Guardian. ISSN 0261-3077. Retrieved 2021-12-02.
  59. "Omicron Covid variant 'present in Europe at least 10 days ago'". The Guardian. 2021-11-30. Retrieved 2021-12-02.
  60. Ambrose (now), Tom; Hall, Rachel; Belam, Martin; Lock (earlier), Samantha (2021-12-02). "Covid news: Omicron detected in US; UK reports 48,374 new cases and 171 deaths – as it happened". The Guardian. ISSN 0261-3077. Retrieved 2021-12-02.
  61. Dwyer, Orla (December 2021). "Omicron Covid variant detected in Ireland from travel but 'no evidence yet' of community transmission". TheJournal.ie.
  62. "Doctor who attended UK summit confirmed as Israel's 3rd Omicron case". The Times of Israel. 2 December 2021. Archived from the original on 4 December 2021. Retrieved 18 December 2021.
  63. Gregory, Andrew (1 December 2021). "Israeli doctor believes he caught Omicron variant of Covid in London". The Guardian. Archived from the original on 17 December 2021. Retrieved 18 December 2021.
  64. "Omicron variant fuelling 'exponential' rise in Covid cases, say South Africa officials". The Guardian. December 2, 2021.
  65. Belam, Lucy Campbell (now); Martin; Lock (earlier), Samantha; Henley, Jon (December 2, 2021). "Covid live: Germany set to impose restrictions on the unvaccinated; India detects two cases of Omicron variant". The Guardian – via www.theguardian.com.{{cite news}}: CS1 maint: multiple names: authors list (link)
  66. "First case of Omicron variant case found in mainland France". Reuters. December 2, 2021.
  67. "Iceland's First Case of Omicron Variant Confirmed". Iceland Monitor.
  68. "Greece Reports First Case of Omicron Variant on Crete". December 2, 2021.
  69. "Finland discovers first case of Omicron variant of coronavirus". Reuters. December 2, 2021.
  70. Wong, Shiying (2021-12-02). "Singapore detects first 2 imported Covid-19 cases who test preliminarily positive for Omicron". The Straits Times. ISSN 0585-3923. Retrieved 2021-12-02.
  71. "Second US case of Omicron linked to New York anime convention". The Guardian. Associated Press. December 2, 2021.
  72. Hollister, Sean (December 2, 2021). "All 53,000 attendees of Anime NYC urged to get tested after one got Omicron". The Verge.
  73. "Statement from Mayor de Blasio on Omicron Variant". Twitter. 2 December 2021. Retrieved 14 December 2021.
  74. "Anime NYC Omicron variant announcement". Twitter. 2 December 2021. Retrieved 14 December 2021.
  75. "Omicron sudah sampai ke Malaysia". Malaysiakini. 2021-12-03. Retrieved 2021-12-03.
  76. "Omicron: Biden tightens travel rules amid new Omicron cases". BBC News. December 3, 2021.
  77. "Codid-19 : un second cas de variant Omicron à La Réunion" (in French). Imaz Press. December 3, 2021. Retrieved 3 December 2021.
  78. Abbott, Allison Prang and Brianna (December 4, 2021). "Omicron Variant Detected in at Least 10 U.S. States". Wall Street Journal – via www.wsj.com.
  79. Marsh, Sarah; Elgot, Jessica; Marsh, Sarah; Mason, Rowena (December 4, 2021). "Covid news: Boris Johnson reported to police over No 10 parties, South Korea cases and deaths at new high". The Guardian.
  80. "Omicron outbreak at Norway Christmas party is biggest outside South Africa, authorities say". CNN. Reuters. 3 December 2021. Retrieved 5 December 2021.
  81. Brandal, Lin; Macdonald, Emily; Veneti, Lamprini; Ravlo, Tine (16 December 2021). "Outbreak caused by the SARS-CoV-2 Omicron variant in Norway, November to December 2021". Eurosurveillance. 26 (50). doi:10.2807/1560-7917.ES.2021.26.50.2101147. PMC 8728491. PMID 34915975. S2CID 245263130.
  82. "Covid-19 pandemic: Israel confirms 7 cases of omicron, 27 others suspected". Business Standard. 4 December 2021. Archived from the original on 4 December 2021. Retrieved 18 December 2021.
  83. "New York Omicron cases rise to eight as official warns of community spread". The Guardian. 4 December 2021. Retrieved 14 December 2021.
  84. "Two confirmed cases of Omicron variant in quarantine". Fiji Broadcasting Corporation. Retrieved 2021-12-06.
  85. "Weekly operational update on COVID-19 - 7 December 2021". www.who.int. Retrieved 2021-12-08.
  86. "Queensland records first cases of the Omicron variant of COVID-19, both genetically different". ABC News. 2021-12-08. Retrieved 2021-12-08.
  87. "New omicron variant detected in 57 countries: WHO". www.aa.com.tr. Retrieved 2021-12-08.
  88. CDC COVID-19 Response Team (December 18, 2021). "SARS-CoV-2 B.1.1.529 (Omicron) Variant — United States, December 1–8, 2021". MMWR. Morbidity and Mortality Weekly Report. 70 (50): 1731–1734. doi:10.15585/mmwr.mm7050e1. PMC 8675659. PMID 34914670. S2CID 245071514 – via www.cdc.gov.
  89. Junaidi, Ikram (December 25, 2021). "Islamabad reports its first confirmed case of Omicron". DAWN.COM.
  90. "Omicron spreads to 57 countries but too early to tell if variant more infectious, WHO says". The Guardian. December 9, 2021.
  91. Campbell, Tom Ambrose (now); Lucy; Belam, Martin; Lock (earlier), Samantha; Devlin, Hannah (December 10, 2021). "Covid live: Australia to offer jabs to children aged five to 11; people in Scotland urged to cancel Christmas parties" – via www.theguardian.com.{{cite web}}: CS1 maint: multiple names: authors list (link)
  92. Campbell, Nadeem Badshah (now); Lucy; Belam, Martin; Lock (earlier), Samantha (December 10, 2021). "UK reports highest daily new cases since January – as it happened". The Guardian – via www.theguardian.com.{{cite news}}: CS1 maint: multiple names: authors list (link)
  93. Express, The Financial. "Bangladesh confirms first two cases of Omicron variant of COVID-19". The Financial Express.
  94. Patel, Julie Wernau and Aaisha Dadi (December 17, 2021). "New York Hits Covid-19 Case Record as Omicron Looms". Wall Street Journal – via www.wsj.com.
  95. "Australia Covid update: Omicron variant spreading rapidly as NSW and Victoria cases grow". The Guardian. December 13, 2021.
  96. "Israel reports 20 new omicron cases". i24NEWS. 12 December 2021. Archived from the original on 13 December 2021. Retrieved 18 December 2021.
  97. "Cases of Omicron variant rise to 55 in Israel". Xinhua News Agency. 12 December 2021. Archived from the original on 13 December 2021. Retrieved 18 December 2021.
  98. "At least one person in UK has died with Omicron, says Boris Johnson". The Guardian. December 13, 2021.
  99. Colchester, Max (December 13, 2021). "U.K. Sees First Death of a Person With Omicron as Government Warns of Wave of Cases". Wall Street Journal – via www.wsj.com.
  100. Otte (now), Jedidajah; Hall, Rachel; Belam, Martin; Lock (earlier), Samantha; Ni, Vincent; Towie, Narelle; Visontay, Elias; Lyons, Kate (December 13, 2021). "Covid live: Mainland China reports first Omicron cases; Norway to tighten restrictions". The Guardian – via www.theguardian.com.
  101. "Chinese mainland detects Omicron variant from imported asymptomatic carrier - People's Daily Online". en.people.cn.
  102. "Salud confirma el primer caso de ómicron en Puerto Rico". El Nuevo Día. December 13, 2021.
  103. "Pakistan's first Omicron case confirmed through gene-sequencing". DAWN.COM. December 13, 2021.
  104. Belam, Lucy Campbell (now); Martin; Lock (earlier), Samantha; Ni, Vincent; Sample, Ian; Sparrow, Andrew; Snapes, Laura (December 14, 2021). "Covid live: France confirms 130 Omicron cases; South Korea has deadliest day of pandemic". The Guardian.{{cite news}}: CS1 maint: multiple names: authors list (link)
  105. "The Omicron Variant Can Evade Vaccine Protection. Here's How We Know". Wall Street Journal. December 14, 2021.
  106. "Covid-19: détection d'un premier cas du variant Omicron en Algérie". www.aps.dz (in French). December 14, 2021. Archived from the original on 2021-12-14.
  107. "Omicron spread in Israel may be wider than thought — report". The Times of Israel. 14 December 2021. Archived from the original on 15 December 2021. Retrieved 18 December 2021.
  108. Qingqing, Chen (December 15, 2021). "Mainland reports 2 Omicron cases as supply chain threatened - People's Daily Online". en.people.cn. Retrieved 2021-12-16.
  109. "Omicron variant identified in 89 countries; has doubling time between 1.5-3 days in high community transmission areas: WHO". The Financial Express. 18 December 2021. Retrieved 2021-12-19.
  110. "First Omicron case detected in New Zealand". Ministry of Healfh. 16 December 2021. Retrieved 16 December 2021.
  111. detikcom, Tim (2021-12-16). "Pasien Pertama Omicron di RI Kini Sudah Negatif, Begini Kronologinya". detiknews (in Indonesian). Retrieved 2021-12-16.
  112. Bartholomew, Tom Ambrose (now); Jem; Bryant, Miranda; Lock (earlier), Samantha; Weale, Sally; Hytner, Mike (December 16, 2021). "Covid live: Italy reports highest daily cases since March; Canada's Omicron cases 'could overwhelm Ontario ICUs'". The Guardian.{{cite news}}: CS1 maint: multiple names: authors list (link)
  113. Bartholomew, Tom Ambrose (now); Jem; Bryant, Miranda; Lock (earlier), Samantha; O'Carroll, Lisa (December 16, 2021). "Covid live: Italy reports highest daily cases since March; Canada's Omicron cases 'could overwhelm Ontario ICUs'". The Guardian.{{cite news}}: CS1 maint: multiple names: authors list (link)
  114. Bartholomew, Tom Ambrose (now); Jem; Bryant, Miranda; Lock (earlier), Samantha; Campbell, Denis (December 16, 2021). "Covid live: Italy reports highest daily cases since March; Canada's Omicron cases 'could overwhelm Ontario ICUs'". The Guardian.{{cite news}}: CS1 maint: multiple names: authors list (link)
  115. Gazn, Jami (December 16, 2021). "Omicron found in nearly all of Florida county's wastewater samples". New York Daily News. Archived from the original on December 16, 2021. Retrieved December 17, 2021.
  116. "Dr. Anthony Fauci on Omicron and the Covid-19 Stalemate - the Journal. - WSJ Podcasts".
  117. "Palestinians detect first 3 cases of omicron in West Bank". ABC News. Associated Press. 17 December 2021. Archived from the original on 17 December 2021. Retrieved 17 December 2021.
  118. "Covid-19: Three more Omicron cases reported in MIQ". Radio New Zealand. 17 December 2021. Archived from the original on 17 December 2021. Retrieved 17 December 2021.
  119. "Biden warns of 'winter of severe illness and death' for those unvaccinated against Covid". The Guardian. December 16, 2021.
  120. "Omicron spreading rapidly in U.S., infections could peak in January, CDC warns". The Washington Post. 2021-12-14. Retrieved 2021-12-19.
  121. Patel, Julie Wernau and Aaisha Dadi (December 17, 2021). "Omicron Variant's Rapid Spread Triggers New Precautions". Wall Street Journal – via www.wsj.com.
  122. Hall, Miranda Bryant (now); Rachel; Otte, Jedidajah; Lock (earlier), Samantha; Brooks, Libby (December 17, 2021). "Covid live: UK reports 93,045 new cases; pubs and restaurants in Ireland reportedly set to get 8pm curfew" – via www.theguardian.com.{{cite web}}: CS1 maint: multiple names: authors list (link)
  123. Hall, Miranda Bryant (now); Rachel; Otte, Jedidajah; Lock (earlier), Samantha; Morris, Steven; Morris, Steven (December 17, 2021). "Covid live: UK reports 93,045 new cases; pubs and restaurants in Ireland reportedly set to get 8pm curfew" – via www.theguardian.com.{{cite web}}: CS1 maint: multiple names: authors list (link)
  124. Hall, Miranda Bryant (now); Rachel; Otte, Jedidajah; Lock (earlier), Samantha; O'Carroll, Lisa (December 17, 2021). "Covid live: UK reports 93,045 new cases; pubs and restaurants in Ireland reportedly set to get 8pm curfew". The Guardian – via www.theguardian.com.{{cite news}}: CS1 maint: multiple names: authors list (link)
  125. "Covid-19: Qatar reports its first four Omicron cases". Khaleej Times.
  126. "WHO says Omicron in 89 countries and spreading rapidly". The Guardian. Reuters. December 18, 2021.
  127. Gayle, Damien (18 December 2021). "Covid live: Omicron spreads significantly faster than Delta, says WHO; experts call for stricter restrictions in England 'very soon'". The Guardian. Retrieved 18 December 2021.
  128. "Cases of COVID-19 Omicron variant climb to 134 in Israel". Xinhua News Agency. 18 December 2021. Archived from the original on 18 December 2021. Retrieved 18 December 2021.
  129. Adam, Ashman (18 December 2021). "Dr Noor Hisham: 11 more Omicron variant cases detected". Malay Mail. Archived from the original on 19 December 2021. Retrieved 19 December 2021.
  130. "Covid-19 update: 39 community cases in New Zealand today, 4 new cases of Omicron". Radio New Zealand. 18 February 2021. Archived from the original on 18 December 2021. Retrieved 18 December 2021.
  131. Khan, Sadiq [@MayorofLondon] (19 December 2021). "The Omicron variant has spread rapidly across the capital. Today I have declared a major incident in London because of the serious threat of COVID-19 to our city. This will help us avoid disruption to frontline services and to the life-saving booster vaccine rollout" (Tweet). Retrieved 19 December 2021 – via Twitter.
  132. "Covid: UK Omicron cases grow by more than 10,000 as major incident declared in London". ITV. 18 December 2021. Archived from the original on 18 December 2021. Retrieved 19 December 2021.
  133. Margol, Ian; Torres, Andrea (December 16, 2021). "'This is unprecedented': Omicron causes 80% of coronavirus cases in Miami-Dade in 2 weeks". WPLG. Archived from the original on December 17, 2021. Retrieved December 19, 2021.
  134. "Covid: Javid does not rule out more Covid measures". BBC News. 2021-11-28. Retrieved 2021-12-19.
  135. Quinn (Now), Ben; Lawther (Earlier), Fran; Stewart, Heather; Wolfe-Robinson, Maya (19 December 2021). "Covid live: UK minister not ruling out 'circuit breaker' before Christmas; Netherlands lockdown begins | World news". The Guardian. Retrieved 2021-12-19.
  136. "The Science Behind Omicron's Rapid Spread". Wall Street Journal. 18 December 2021.
  137. Moloney, Tom Ambrose (now); Charlie; Lock (earlier), Samantha; Grierson, Jamie; Henley, Jon; Davey, Melissa (December 20, 2021). "Covid live: Thailand to consider ending quarantine-free travel; EU set to back Novavax vaccine". The Guardian – via www.theguardian.com.{{cite news}}: CS1 maint: multiple names: authors list (link)
  138. @ians_india (20 December 2021). "The number of people dying due to the #OmicronVariant of #COVID19 in the #UK rose to 12 on Monday from seven report…" (Tweet) – via Twitter.
  139. Moloney, Tom Ambrose (now); Charlie; Lock (earlier), Samantha (December 20, 2021). "Covid live: Thailand to consider ending quarantine-free travel; EU set to back Novavax vaccine" – via www.theguardian.com.{{cite web}}: CS1 maint: multiple names: authors list (link)
  140. Kuchler, Hannah (December 20, 2021). "Moderna Covid booster produces strong antibody response against Omicron". Financial Times.
  141. Loftus, Peter (December 20, 2021). "Moderna Says Covid-19 Booster Dose Works Against Omicron Variant in Lab Tests". Wall Street Journal – via www.wsj.com.
  142. Toy, Sarah (December 21, 2021). "Omicron Variant Accounts for 73% of U.S. Covid-19 Cases, CDC Says". Wall Street Journal – via www.wsj.com.
  143. Roland, Sarah Toy, Daniela Hernandez, Joanna Sugden and Denise (December 17, 2021). "Omicron and Its Symptoms: What to Know as Americans Are Catching the New Variant". Wall Street Journal – via www.wsj.com.{{cite news}}: CS1 maint: multiple names: authors list (link)
  144. Ferguson N, Ghani A, Cori A, Hogan A, Hinsley W, Volz E (20 December 2021). Growth, population distribution and immune escape of the Omicron in England (Technical report). WHO Collaborating Centre for Infectious Disease Modelling, MRC Centre for Global Infectious Disease Analysis. Imperial College London. doi:10.25561/93038. Report 49. Archived (PDF) from the original on 20 December 2021.
  145. "Variant Omicron: un 2éme cas confirmé en Algérie". www.aps.dz (in French). 24 December 2021. Archived from the original on 24 December 2021. Retrieved 24 December 2021.
  146. Sider, Alison (December 25, 2021). "Travel Woes Deepen as Omicron Variant Hits Pilots and Flight Attendants". Wall Street Journal – via www.wsj.com.
  147. "Christmas travel chaos as airlines cancel more than 4,500 flights". The Guardian. December 25, 2021.
  148. Badshah, Caitlin Cassidy (now) Nadeem; Ahmed (earlier), Kaamil (December 26, 2021). "France, Italy and Ireland see record daily highs; Israel orders 100,000 anti-viral pills – as it happened". The Guardian – via www.theguardian.com.
  149. "Covid-19: deux nouveaux cas du variant Omicron détectés en Algérie". www.aps.dz (in French). 26 December 2021. Archived from the original on 26 December 2021.
  150. @IndiaToday (26 December 2021). "The new Covid variant Omicron is now present in nearly 115 countries. Here's a look at number of cases reported acr…" (Tweet) – via Twitter.
  151. Bryant, Nadeem Badshah (now); Miranda; Bryant, Tom; Farrer, Martin; Cassidy (earlier), Caitlin; Ahmed, Kaamil; McKie, Robin; Savage, Michael (December 26, 2021). "Covid live: US reports highest seven-day cases average since January; UK 'considering door-to-door vaccinations'" – via www.theguardian.com.{{cite web}}: CS1 maint: multiple names: authors list (link)
  152. Chao-Fong (now), Léonie; Ambrose, Tom; Otte, Jedidajah; Lock (earlier), Samantha (December 28, 2021). "England hospital Covid admissions highest since February; France announces new curbs – as it happened" – via www.theguardian.com.
  153. "CDC drastically drops estimate of US Omicron cases". The Guardian. 29 December 2021. Archived from the original on 29 December 2021. Retrieved 29 December 2021.
  154. Campbell, Lucy; Slawson, Nicola; Lock, Samantha (29 December 2021). "Covid news live: France accelerates introduction of vaccine passes; Europe cases at record highs". The Guardian. Archived from the original on 29 December 2021.
  155. "New Zealand reports first community exposure to Omicron". The Guardian. 29 December 2021. Archived from the original on 29 December 2021. Retrieved 29 December 2021.
  156. Ensor, Blair; Basagre, Bernadette (29 December 2021). "Covid-19: Omicron border case active in the community is DJ Dimension". Stuff. Archived from the original on 29 December 2021. Retrieved 29 December 2021.
  157. "Coronavirus : 12 nouveaux cas du variant Omicron détectés en Algérie". www.aps.dz (in French). 30 December 2021. Archived from the original on 30 December 2021.
  158. "The second case with Omicron is registered in Northern Macedonia | txtreport.com". www.txtreport.com. 30 December 2021. Retrieved 2022-01-03.
  159. Johnson, Kimberly S. (December 31, 2021). "Omicron Pushes Short-Staffed Urgent Care Centers to the Brink". Wall Street Journal – via www.wsj.com.
  160. "US to lift Omicron travel ban on eight African countries". The Guardian. December 24, 2021.
  161. "Covid-19: WHO chief optimistic disease will be beaten in 2022". BBC News. December 31, 2021. Retrieved 3 January 2022.
  162. "Omicron daily overview: 31 December 2021" (PDF). gov.uk. UKHSA. 31 December 2021. Retrieved 3 January 2022. As VOC Omicron is now the dominant strain within England, with effect from 1 January 2022 UKHSA will no longer be separately reporting VOC Omicron statistics.
  163. "S.Korea reports first deaths linked to Omicron coronavirus variant - Yonhap". Reuters. 2022-01-03. Retrieved 2022-01-03.
  164. Lock (now), Samantha; Mulligan, Euan O'Byrne; Ambrose, Tom; Otte (earlier), Jedidajah; Taylor, Josh (January 5, 2022). "Italy reports record 170,844 cases and 259 deaths; fourth jab gives five-fold antibody boost, study says – as it happened". The Guardian – via www.theguardian.com.
  165. Ellyatt, Holly (4 January 2022). "U.S. reports over 1 million new daily Covid cases as omicron surges". CNBC.
  166. Kozlov, Max (5 January 2022). "Omicron's feeble attack on the lungs could make it less dangerous". Nature News. 601 (7892): 177. Bibcode:2022Natur.601..177K. doi:10.1038/d41586-022-00007-8. PMID 34987210. S2CID 245709042.
  167. "Covid-19: India records first death linked to Omicron variant". BBC News. January 6, 2022.
  168. "Covid: Deadly Omicron should not be called mild, warns WHO". BBC News. 6 January 2022.
  169. "Military deployed at London hospitals due to Omicron staff shortages". TheGuardian.com. 7 January 2022.
  170. "Covid-19: 47 nouveaux cas du variant Omicron détectés en Algérie". www.aps.dz (in French). 7 January 2022. Archived from the original on 9 January 2022.
  171. Chao-Fong, Léonie; Helmore, Edward (January 9, 2022). "Covid live news: UK minister says cutting self-isolation would be 'helpful'; Philippines sets new daily case record". The Guardian – via www.theguardian.com.
  172. "Peru reports highest-ever weekly COVID-19 case count as Omicron spreads". Reuters. 10 January 2022.
  173. "Covid: Half of Europe to be infected with Omicron within weeks - WHO". BBC News. January 11, 2022.
  174. Umlauf, Josh Ulick and Taylor (January 12, 2022). "Will Record Omicron Cases Cause a Surge in the Severely Ill? Scientists Look for Signs". Wall Street Journal – via www.wsj.com.
  175. "Covid-19: 82 nouveaux cas du variant Omicron détectés en Algérie". www.aps.dz (in French). 13 January 2022. Archived from the original on 13 January 2022.
  176. Hayes, Kelly (14 January 2022). "US omicron peak: Fauci predicts steep drop in cases toward 'end of January'". Fox News.
  177. 孫聖然 (2022-01-15). "新冠肺炎｜北京現首宗Omicron本土個案 患者發病前足跡涉多區". 香港01 (in Chinese (Hong Kong)). Retrieved 2022-01-25.
  178. "北京新增一宗本土確診 涉及Omicron變種病毒 - RTHK". news.rthk.hk (in Chinese (Hong Kong)). Retrieved 2022-01-25.
  179. "Beijing reports its first locally transmitted Omicron variant case". The Guardian. January 15, 2022.
  180. "危险快递！北京、深圳奥密克戎"破防"或由国际快递引起-中国科技网". www.stdaily.com. Retrieved 2022-01-25.
  181. 戴萌萌. "北京病例近期收到的国际邮件多处核酸阳性". news.cctv.com. Retrieved 2022-01-25.
  182. "最全！国际邮件快件如何收取才安全？专家详解_防控举措_北京经济技术开发区". kfqgw.beijing.gov.cn. Retrieved 2022-01-25.
  183. "Beijing Says International Mail Is Possible Culprit in First Omicron Case". The Wall Street Journal. 17 January 2022.
  184. "France Logs Nearly Half A Million Record Covid Cases Amid Omicron Surge". NDTV. 19 January 2022.
  185. "Coronavirus: 400 cas du variant Omicron enregistrés en Algérie". www.aps.dz (in French). 20 January 2022. Archived from the original on 20 January 2022. Retrieved 20 January 2022.
  186. "Covid-19 update: 45 new community cases, 34 Omicron cases added to total". Radio New Zealand. 27 January 2022. Archived from the original on 27 January 2022. Retrieved 28 January 2022.
  187. "Covid-19 update: 105 new community cases, 15 new Omicron cases identified". Radio New Zealand. 28 January 2022. Archived from the original on 28 January 2022. Retrieved 28 January 2022.
  188. "Why Omicron-infected white-tailed deer pose an especially big risk to humans". Fortune.
  189. Inada, Peter Landers and Miho (February 23, 2022). "Fast-Spreading Covid-19 Omicron Type Revives Questions About Opening Up". Wall Street Journal – via www.wsj.com.
  190. Sheward, Daniel J; Kim, Changil; Fischbach, Julian; Sato, Kenta; Muschiol, Sandra; Ehling, Roy A; Björkström, Niklas K; Hedestam, Gunilla B Karlsson; Reddy, Sai T; Albert, Jan; Peacock, Thomas P; Murrell, Ben (2022-10-13). "Omicron sublineage BA.2.75.2 exhibits extensive escape from neutralising antibodies". The Lancet Infectious Diseases. 22 (11): 1538–1540. doi:10.1016/S1473-3099(22)00663-6. PMC 9560757. PMID 36244347.
  191. "Update on SARS-CoV-2 variants: ECDC assessment of the XBB.1.5 sub-lineage". European CDC. 9 January 2023.
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