Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vaccine provides lifelong immunity.

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Biology

Apollo

22 February, 21:58

Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vaccine provides lifelong immunity.

I really need this have to type it.

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Martha Gonzalez · Answer 1

The flu vaccine changes every year. The flu vaccine is based on a predicted strain that is anticipated to be the most infectious that year. Thats why people who sometimes get the vaccination still get the flu, they don't have the antibodies for the strain they were infected with. Strains for viral disease don't change very much and usually the vaccination for them cover them well.

Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vaccine provides lifelong immunity.I really need this have to type it.

Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vaccine provides lifelong immunity.

I really need this have to type it.