Flu season more aggressive than last year, data shows

Posted Jan 4, 2013 06:30:03 AM.

This article is more than 5 years old.

If you’ve noticed more people around you coughing and sneezing — that’s because the flu seems to be more aggressive right now than in 2012.

According to Health Canada, the number of cases of the flu were way up by mid-December compared to 2012, and the flu season hasn’t even peaked yet.

A U.S. health official said many cases apparently have to do with a strain of influenza called subtype B, which is not included in this flu season’s vaccine.

Experts warn that you’re infectious for a full day before you show any symptoms at all.

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