Question

d
Define vaccination​

Answer 1

Explanation:

Vaccination is the administration of a vaccine to help the immune system develop protection from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism.

Answer 2

Explanation:

vaccine is an antigenic substance that develops immunity against a disease which can be delivered through needle injections or by mouth or by aerosol. Vaccination is the injection of a dead or weakened organism that forms immunity against that organism in the body.