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Flu shot effectiveness for 2015-16 disappointing, data shows

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  • Flu shot effectiveness for 2015-16 disappointing, data shows

    It's the time of year when experts crunch the numbers to see how well the flu shot worked. The result? Better than last year, but still not good enough.
    "Overall, just shy of 45 to 50 per cent," said Dr. Danuta Skowronski of the BC Centre for Disease Control, who presented the data to the Global Influenza Vaccine Effectiveness meeting at the World Health Organization last week.
    "That's lower than we would like to see, but it's an improvement over the previous year, because it couldn't be worse, frankly"
    In 2014-15, the flu shot offered essentially zero protection against the circulating influenza virus of that season. Back then, the prevailing strain was H3N2.

    ...


    A Canadian protocol now used globally reveals the flu shot doesn't work as well as scientists once believed. For the 2015-16 flu season, protection was just 50 per cent. That's better than last year's rate of near zero. But experts say it's still not good enough.

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