Flu shots down fall!

Marcus Thomas

On November 6 , 2017 Researchers at different workshops have identified an important reason why flu shots don’t work very well. They are grown in chicken eggs. Flu viruses mutate every year. Last year’s part of the flu vaccine targeted H3N2 flu virus,  which was the main strain that made people sick in the U.S. last year. To make a flu vaccine, producers inject a seed virus strain into eggs and then incubate them as the virus grows. Then they purify the virus, and either weaken it or kill it to make a vaccine. So far 42 people have got sick of the flu shot.