Update: Influenza -- United States, through February 8, 1984
Influenza virus type A(H1N1) continues to be the most
frequently
reported isolate in the United States, with outbreaks in schools
and
colleges. Similar outbreaks in school-aged populations in Oregon,
where type A(H1N1) virus has not been isolated, have been reported
in
association with type B virus isolates.
Thus far in the 1983-1984 season, isolates of type A(H1N1)
virus
have been reported from the District of Columbia and 26 states:
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Florida,
Georgia, Hawaii, Iowa, Louisiana, Maine, Massachusetts, Michigan,
Minnesota, Mississippi, Montana, Nevada, New Mexico, New York,
North
Carolina, Oklahoma, Pennsylvania, South Carolina, Texas, and
Wisconsin, with associated outbreaks reported from Arizona,
Arkansas,
California, the District of Columbia, Georgia, Iowa, Louisiana,
Massachusetts, Minnesota, Mississippi, New Mexico, New York, North
Carolina, South Carolina, and Wisconsin. Isolates of type B virus
have been reported from 19 states: Alaska, Arizona, California,
Colorado, Hawaii, Illinois, Minnesota, Montana, Nevada, New Mexico,
New York, Oklahoma, Oregon, Tennessee, Texas, Utah, Washington,
West
Virginia, and Wisconsin, with associated outbreaks reported from
Minnesota and Oregon. Isolates of type A(H3N2) virus have been
reported from Alaska, Arizona, New Mexico, Pennsylvania, and
Tennessee; associated outbreaks were reported from Alaska at the
end
of 1983.
Reported by D Coulter, D McNeill, L Foster, MD, Oregon Health Div;
Respective State Epidemiologists and Laboratory Directors;
Influenza
Br, Div of Viral Diseases, Center for Infectious Diseases, CDC.
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