UK, Canada add to bad news on this year's flu vaccine

February 6, 2015 12:38 AM

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UK, Canada add to bad news on this year's flu vaccine

Researchers brought more bad news today on the performance of this winter's flu vaccine—which does not match well with the dominant circulating strain—saying it has shown no significant effectiveness in preventing flu in the United Kingdom or in preventing flu-related hospitalizations in Canada.

The British team estimated the vaccine's effectiveness in preventing medically attended flu at just 3.4%, while the Canadian group put its effectiveness for preventing flu-linked hospitalizations in the negative range: –16.8%. The findings were published in today's Eurosurveillance.

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