In combating the pandemic, H1N1 vaccines were the most critical preventive measure, saving millions of lives

In combating the pandemic, H1N1 vaccines were the most critical preventive measure, saving millions of lives

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In combating the pandemic, H1N1 vaccines were the most critical preventive measure, saving millions of lives

The 2021 swine flu pandemic viruses were novel H1N1 vaccines designed to protect against the new pandemic H1N1 strain

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