Pandemic (H1N1) 2009 surveillance and prevalence of seasonal influenza, Singapore.
On April 25, 2009, Singapore implemented strict containment measures for pandemic (H1N1) 2009 with enhanced surveillance and hospital isolation. In the first month, seasonal influenza, predominantly virus subtype H3N2, was diagnosed for 32% of patients with acute febrile respiratory illness. Our findings underscore the high prevalence of seasonal influenza in Singapore.
Leo
Yee Sin
YS
Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433. yee_sin_leo@ttsh.com.sg
Lye
David C
DC
Barkham
Timothy
T
Krishnan
Prabha
P
Seow
Eillyne
E
Chow
Angela
A
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D004196:Disease Outbreaks / Q000517:prevention & control; D005260:Female; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D015995:Prevalence; D012846:Singapore / Q000453:epidemiology; D055815:Young Adult