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Title : 2017 Flu Season Really Bad - Vaccine Only 10% Effective
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2017 Flu Season Really Bad - Vaccine Only 10% Effective

In addition to holidays and sweater weather, winter bring with it a less than welcome event: flu season. This year, experts are warning that flu season will be particularly nasty—in part, they believe, because of a less effective vaccine.

The annual flu vaccine development process begins several months before each flu season. In February, a global group of researchers meets at the World Health Organization to identify three or four strains of the influenza virus they think will infect folks in the northern hemisphere, based on what made people sick in the southern hemisphere’s most recent flu season. (Researchers meet in September to strategize for the southern hemisphere’s flu season, and so on). This approach usually provides effective coverage from the flu for most vaccine recipients—well, 40 to 60% of the time, which is pretty good in terms as far as vaccine coverage goes.

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