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Volume 16, Number 1—January 2010


Pandemic (H1N1) 2009 Surveillance and Prevalence of Seasonal Influenza, Singapore

Yee-Sin LeoComments to Author , David C Lye, Timothy Barkham, Prabha Krishnan, Eillyne Seow, and Angela Chow
Author affiliations: Tan Tock Seng Hospital, Singapore

Main Article


Performance of influenza screening criteria for travelers returning to Singapore and their contacts, April 27­–May 24, 2009

Screening criteria Sensitivity, % Specificity, % Positive predictive value, % Negative predictive value, %
Temperature >37.5°C and cough or sore throat 74.1 71.6 50.8 87.5
Temperature >37.5°C and cough, sore throat, or rhinorrhea 81.2 71.2 52.7 90.5
Temperature >37.8°C and cough or sore throat (9) 67.1 80.0 57.0 86.0
Temperature >38°C and cough or sore throat (13) 54.1 87.0 62.2 82.7

Main Article

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