Question

What does vaccine consist of? how does a vaccine work?

Answer 1

Hey.hi..

First of all the any part of that virus inject with other animal and then after some time collect a blood and seperatly a plasma..at that time the body of animal make antibodies against this virus.....and this antibodies inject inside effected person.....

Answer 2

Explanation:

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.

Each vaccine contains a small amount of the disease germ (virus or bacteria) or parts of the germ. Examples are the measles virus, pertussis (whooping cough) bacteria, and tetanus toxoid. Vaccines do not cause disease because the germs are either dead or weakened and the toxoids are inactive.