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IgorC [24]
3 years ago
6

Doctors sometimes use a vaccine to help prepare the body to defend itself against future infections. These vaccines most often c

ontain
Biology
2 answers:
kifflom [539]3 years ago
7 0
The answer is dead or weakened virus
lesya692 [45]3 years ago
4 0

Answer: weakened pathogens

Explanation:

Each vaccine contains a small amount of the disease germ (virus or bacteria) or parts of the germ.

A pathogen is a bacterium, virus, or other microorganism that can cause disease.

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