Question

Why are vaccines? How does a vaccine work?​

Answer 1

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Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Thank you!

@itzshivani

Answer 2

Answer:

A vaccine is the suspension of a killed pathogenic bacteria.

Explanation:

when it is injected into one's body it produces antibodies and provides immunity against a particular disease.

As right now we have covid-19 vaccine. It produces immunity against Covid-19 only not any other