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The Covid-19 pandemic killed off one strain of the flu, and that will change the next vaccines

todayMarch 5, 2024 8

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For 10 years, Americans have had access to flu shots that protect against four strains of the virus: two A strains and two B strains.

​ For 10 years, Americans have had access to flu shots that protect against four strains of the virus: two A strains and two B strains. Read More Breaking News, Latest News and Videos | CNN 

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