Question

please define vaccines

Answer 1

Vaccines are acquired immunity to a specific disease

Answer 2

Heya,

Here is your answer.

A vaccine is a preparation  that helps in the improvement of immunity to a disease.It contains an agent  resembles a disease causing micro organism.It is made from the killed microbes.

Giving vaccine to a person can further protect him from the disease caused by the particular micro organism.

Hope this helps you!!!!

Good night..........