This year’s flu shot is 72% effective against the dominant strain – much better than last year’s, researchers say

Canadian researchers say that this year’s flu vaccine appears to reduce the risk of catching the dominant flu strain by 72 per cent – much better than last year’s flu shot. “A vaccine effectiveness of about 70 per cent means that among 10 cases of influenza in unvaccinated people, the number would have been reduced to just three cases if they had been vaccinated,” explained lead researcher Dr. Danuta Skowronski of the B.C. Centre for Disease Control.