Volume 16, Number 1—January 2010
Dispatch
Pandemic (H1N1) 2009 Surveillance and Prevalence of Seasonal Influenza, Singapore
Yee-Sin Leo
, David C Lye, Timothy Barkham, Prabha Krishnan, Eillyne Seow, and Angela Chow
, David C Lye, Timothy Barkham, Prabha Krishnan, Eillyne Seow, and Angela ChowTable
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 |
