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chicken eggs News

Outdated technology makes flu vaccine only 20 percent effective

Last year's flu vaccine should have matched the circulating virus strains that made people sick, but it was only 43 percent effective. This year's flu vaccine will be only 20 percent effective, and it's due to chicken eggs.
 

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An FDA laboratory worker injects an influenza virus into an egg  where it will grow before being har...
An FDA laboratory worker injects an influenza virus into an egg, where it will grow before being harvested—one of the many complex steps involved in creating a traditional flu vaccine.
FDA

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