Question

Write few sentences about vaccines? no​

Answer 1

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A vaccination is a treatment which makes the body stronger against an infection. The body fights infections using the immune system, which is made up of millions upon millions of cells including T cells and B cells.

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Answer 2

Answer:

Vaccines are usually made from something that is alive, or was alive.

The word "vaccine" comes from the Latin words vaccīn-us (from the word vacca, meaning "cow"). In 1796, Edward Jenner used cows infected with cowpox (variolae vaccinae) to protect people against smallpox.

The use of vaccines is called vaccination.

Explanation:

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