Journal article
Performance of case definitions for influenza surveillance
L Jiang, VJ Lee, WY Lim, MI Chen, Y Chen, L Tan, RT Lin, YS Leo, I Barr, AR Cook
Euro surveillance : bulletin Européen sur les maladies transmissibles = European communicable disease bulletin | EUR CENTRE DIS PREVENTION & CONTROL | Published : 2015
Abstract
Influenza-like illness (ILI) case definitions, such as those from the European Centre for Disease Control and Prevention, World Health Organization (WHO) and United States Centers for Disease Control and Prevention, are commonly used for influenza surveillance. We assessed how various case definitions performed during the initial wave of influenza A(H1N1) pdm09 infections in Singapore on a cohort of 727 patients with two to three blood samples and whose symptoms were reviewed fortnightly from June to October 2009. Using seroconversion (≥ 4-fold rise) to A/California/7/2009 (H1N1), we identified 36 presumptive influenza A(H1N1)pdm09 episodes and 664 episodes unrelated to influenza A(H1N1)pdm0..
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Awarded by National Medical Research Council of Singapore
Funding Acknowledgements
This project was funded by the grant PPG10-09 from the National Medical Research Council of Singapore. M.I.C., Y.C. and A.R.C. are supported by the Centre for Infectious Disease Epidemiology and Research at the Saw Swee Hock School of Public Health, National University of Singapore and National University Health System. The WHO Collaborating Centre for Reference and Research on Influenza, Melbourne, is supported by the Australian Government Department of Health and Ageing.