Question

what are vaccines discuss their types of give an example

Answer 1

vaccines are simply sample disease injected mostly in the host to impart immunity boosting for that particular disease.

Answer 2

A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.