Question

It's been one and half year that world is fighting with virus called Corona. India

and other countries has developed vaccine against Corona virus.

Write an article on the working of vaccine, how vaccine helps to improve immune

system against virus​

Answer 1

Explanation:

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.22-Nov-2019