Question

what is human immune system? what is a vaccine? how immunisation can be achieved ​

Answer 1

Vaccines help human to immunise against certain diseases as they are just weakened or dead bacteria that help the body and stimulate it to produce antibodies against that bacteria to prevent such infections in the future

Answer 2

✔The immune system protects the body against disease or other potentially damaging foreign bodies. When functioning properly, the immune system identifies and attacks a variety of threats, including viruses, bacteria and parasites, while distinguishing them from the body’s own healthy tissue.

✔Vaccine is a mild form of a disease that is put (injected) into a person or an animal’s blood using a needle (an injection) in order to protect the body against that disease.

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