An outbreak of influenza a caused by imported virus in the United States, July 1999.
We report 32 cases of culture-proven influenza A (A/Sydney) caused by virus imported into mainland US military barracks from Puerto Rico in July 1999. Despite the fact that the shelf life of the influenza vaccine is 18 months and that the outbreak strain was a component of the previous year's vaccine, no vaccine was available from manufacturers, owing to US Food and Drug Administration regulations. Formal consideration should be given to extending the date of expiration and to maintaining a supply of the influenza vaccine year-round.
Laurel
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VL
Division of Infectious Diseases, Department of Medicine, Wilford Hall Medical Center, Lackland Air Force Base, TX 78236-5300, USA. vlaurel@yahoo.com
De Witt
C C
CC
Geddie
Y A
YA
Yip
M C
MC
Dolan
D M
DM
Canas
L C
LC
Dolan
M J
MJ
Walter
E A
EA
D004196:Disease Outbreaks; D006801:Humans; D009980:Influenza A virus; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology* / Q000503:physiopathology / Q000517:prevention & control; D014481:United States / Q000453:epidemiology
D007252:Influenza Vaccines