Epidemiologic Notes and Reports
Update: Influenza Virus A(H3N2) Isolations -- United States
Three additional states, Pennsylvania, Tennessee, and
Washington,
as well as upstate New York, have reported influenza virus type
A(H3N2) isolations. The isolates were collected from patients who
had
onset of influenza from mid to late November in Pittsburgh,
Pennsylvania (1 case), Nashville, Tennessee (2 cases), and Skagit
County, Washington (2 cases). The isolate from upstate New York
was
obtained from a 16-year-old female who had visited in Ottawa,
Canada,
for approximately 2 days, when she had onset of influenza on
November
19. She returned to her home in Rochester, New York, on November
21,
and a specimen was collected for virus testing on November 22.
Isolations of H3N2 influenza virus had earlier been reported
from
Alaska, New York City, Oregon, and Virginia (1). Alaska has
widespread outbreaks of influenza, and 33 isolates of influenza
virus,
all H3N2, have now been identified. Isolates from other locations
have been associated with sporadic cases of influenza rather than
outbreaks.
Reported by D Ritter, J Middaugh, MD, State Epidemiologist, Alaska
Dept of Health and Social Svcs; P Wright, MD, Vanderbilt
University, R
Hutcheson, MD, State Epidemiologist, Tennessee State Dept of Public
Health; J Sarandria, Allegheny County Health Dept, M Richards, MD,
C
Hayes, MD, State Epidemiologist, Pennsylvania State Dept of Health;
S
Mills, J Allard, PhD, State Epidemiologist, Washington State Dept
of
Social and Health Svcs; R Dolin, MD, R Betts, MD, C Hall, MD, Univ
of
Rochester, D Morse, MD, R Rothenberg, MD, State Epidemiologist, New
York State Dept of Health; Influenza Br, Center for Infectious
Diseases, CDC.
Reference
CDC. Influenza A(H3N2) virus isolations--United States. MMWR
1982;31:638.
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