Question

why vaccines are important

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Answer 1

Answer:

I think to protect from COVID-19

Answer 2

Answer:

A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way.

Explanation:

When we vaccinate, we activate the immune system's "memory." During vaccination, a weakened microbe, a fragment, or something that resembles it, is added to the body. The immune system is then activated without us becoming sick. Some dangerous infectious diseases can be prevented in a simple and effective way. For some diseases, vaccination provides lifelong protection, while for others the effect is diminished after a few years and booster doses are required.