opportunist

Examples of opportunist in the following topics:

• Opportunistic Microorganisms

  • Opportunistic microorganisms lay dormant until the hosts' immune system is suppressed and then they seize the opportunity to attack.
  • HIV is an opportunistic infections that feeds on the fact the the immune system is suppressed.
  • Patients with Human Immunodeficiency Virus (HIV) are particularly susceptible to opportunistic infections.
  • These opportunistic pathogens thrive while the human body slowly deteriorates.
  • An example of an opportunistic microorganism is Haemophilus ducreyi.

• Extent of Host Involvement

  • Clinicians therefore classify infectious microorganisms or microbes according to the status of host defenses - either as primary pathogens or as opportunistic pathogens.
  • Organisms which cause an infectious disease in a host with depressed resistance are classified as opportunistic pathogens.
  • Opportunistic diseases may be caused by microbes that are ordinarily in contact with the host, such as pathogenic bacteria or fungi in the gastrointestinal or the upper respiratory tract, and they may also result from (otherwise innocuous) microbes acquired from other hosts or from the environment as a result of traumatic introduction.
  • An opportunistic disease requires impairment of host defenses, which may occur as a result of several factors such as genetic defects, exposure to antimicrobial drugs or immunosuppressive chemicals, exposure to ionizing radiation, or as a result of an infectious disease with immunosuppressive activity.
  • Differentiate between primary and opportunistic pathogens in regards to host involvement

• Host Risk Factors

  • Individuals who have a suppressed immune system or who are on immunosuppressive drugs are particularly susceptible to opportunistic infections.
  • Risk of infection is a nursing diagnosis which is defined as "the state in which an individual is at risk to be invaded by an opportunistic or pathogenic agent (virus, fungus, bacteria, protozoa, or other parasite) from endogenous or exogenous sources. " The risk of infection depends on a number of endogenous sources.
  • One should not take antibiotics for longer than needed or when they are not needed—long term use of antibiotics leads to resistance and increased the chance of developing opportunistic infections like clostridium difficile colitis .

• Fungi

  • Candida species are commonly known to cause opportunist infections in immunocompromised hosts.
  • Candida species are commonly known to cause opportunist infections in immunocompromised hosts .

• Overview of Human-Microbial Reactions

  • Organisms which cause an infectious disease in a host with depressed resistance are classified as opportunistic pathogens.
  • Opportunistic disease may be caused by microbes that are ordinarily in contact with the host, such as pathogenic bacteria or fungi in the gastrointestinal tract.
  • An opportunistic disease requires impairment of host defenses, which may occur as a result of genetic defects, exposure to antimicrobial drugs or immunosuppressive chemicals, exposure to ionizing radiation, or as a result of an infectious disease with immunosuppressive activity.

• Slipped-Strand Mispairing

  • The opportunistic pathogen H. influenzae has two divergently oriented promoters in fimbriae geneshifA and hifB.

• Bacteroidetes and Chlorobi

  • The bacteria categorized as bacteroidetes are opportunistic and are rarely pathogenic as they constitute part of the normal flora.

• Normal Genitourinary Microbiota

  • Normal flora bacteria can act as opportunistic pathogens at times of lowered immunity.The vaginal microflora consist mostly of various lactobacillus species .

• The Diagnostic Scheme

  • Clinicians therefore classify infectious microorganisms or microbes according to the status of host defenses - either as primary pathogens or as opportunistic pathogens.

• Biofilms and Infections

  • The achievements of medical care in industrialized societies are markedly impaired due to chronic opportunistic infections that have become increasingly apparent in immunocompromised patients and the aging population.
  • Pseudomonas aeruginosa is not only an important opportunistic pathogen and causative agent of emerging nosocomial infections but can also be considered a model organism for the study of diverse bacterial mechanisms that contribute to bacterial persistence.