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Circulating influenza virus, climatic factors, and acute myocardial infarction: a time series study in England and Wales and Hong Kong.

Charlotte C Warren-Gash, Krishnan K Bhaskaran, Andrew A Hayward, Gabriel M GM Leung, Su-Vui SV Lo, Chit-Ming CM Wong, Joanna J Ellis, Richard R Pebody, Liam L Smeeth, and Benjamin J BJ Cowling

J Infect Dis 203(12):1710-8 (2011) PMID 21606529 PMCID PMC3100509

Previous studies identifying associations between influenza and acute cardiac events may have been confounded by climatic factors. Differing seasonal patterns of influenza activity in Hong Kong and England and Wales provide a natural experiment to examine associations with myocardial infarction (MI) independent of cold weather effects.

DOI: 10.1093/infdis/jir171
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