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Study finds flu shot really did make people sicker

February 5, 2014

Canadian researchers noticed in the early weeks of the pandemic that people who got a flu shot for the 2008-2009 winter seemed to be more likely to get infected with the pandemic virus than people who hadn’t received a flu shot.”

an influenza expert at the B.C. Centre for Disease Control in Vancouver, also led the first study that spotted the apparent interaction between 2008 flu shots and pandemic flu infection.

She and her colleagues worked with 32 ferrets, giving half the 2008 seasonal flu shot and the remainder a placebo injection. The work was blinded, meaning the researchers didn’t know which ferrets received which shot. Later, all the ferrets were infected with the pandemic H1N1 virus.

The ferrets in the vaccine group became significantly sicker than the other animals, though all recovered.

“The findings that we show are consistent with the increased risk that we saw in the human studies,” Skowronski said.”

Full article:  Study finds flu shot really did make people sicker | Metro.

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