Question

7. protecting someone against a particular disease
by injecting a medicine​

Answer 1

vaccination.........................

Answer 2

Answer:

Vaccines are products that produce immunity to a specific disease. When you are immune to a disease, it means you are protected against that disease (you can be exposed to it without becoming sick). Most vaccines are given by injection (needle), but some are given orally (by mouth) or nasally (sprayed into the nose).

Hope it helps you.