It is common to include more than one flu strain in a vaccine. Describe the advantages of doing this

Flu shots protect against three or four strains of flu virus. Trivalent flu vaccines protect against two influenza A strains — H1N1 and H3N2 — and one influenza B strain.

Explanation:

the following are advantage of flu strain in a vaccine

1)  can keep u from getting sick from flu

2) flu vaccination is important preventive tools for people with chronic health condition

3) flu vaccine protect women during and after pregnancy

4) flu vaccine can be life saving for children

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