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s2008m [1.1K]
3 years ago
5

What do vaccines contain?

Biology
2 answers:
Usimov [2.4K]3 years ago
7 0
Adjuvants help vaccines work better, longer and faster; Added preservatives to keep multi-dose vaccine vials sterile; Antibiotics to prevent bacterial growth during vaccine preparation;
goblinko [34]3 years ago
5 0
Vaccines contain dead bacteria to get ready to fight the real bacteria/virus. Imagine like that every time you take a vaccine the body makes a blueprint of it. Then, when the virus/bacteria comes, the body knows the bacteria/virus because they made a blueprint. Now, the flu vaccine is different because they change very much. They change every year, so that is why you take flu vaccines yearly.
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