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Danuta M. Skowronski, MD, FRCPC

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Letters / October 2009

A cardinal feature of influenza illness is its short incubation and sudden onset. For seasonal influenza viruses, the incubation period is generally estimated to be 1- to 4-days.[1] The 2009 swine-origin pandemic A/H1N1... Read More

BCCDC / March 2005

Influenza epidemics occur each winter, due to subtle mutations in the influenza virus as it evolves. Influenza arrives suddenly each year, spreads rapidly to peak within 2 to 3 weeks, and lasts 5 to 10 weeks. Community... Read More