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How do seasonal flu vaccines work?

April 26, 2017flu seasonal vaccines

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How do seasonal flu vaccines work?

1 Answer

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10 Posted

The flu “shot” uses inactivated (dead) virus particles, that cause the body to produce protective antibodies against a specific strain or strains. The nasal vaccine uses a live but weakened flu virus that cannot cause the flu. These natural antibodies make it impossible for the flu virus to enter your cells, and prevent the replication and spread to other cells and people. No current vaccine has been developed for the current (H5N1) version of bird flu.