1.9 - Immunity

Question 1

What is used to make a vaccine?

Answer 1

Dead or inactive forms of a pathogen

Question 2

Describe how a vaccine makes you immune to a disease (4)

Answer 2

• Dead or inactive forms of the pathogen are put into the body, often by injection
• The antigens in the vaccine stimulate your white blood cells into making antibodies
• The antibodies destroy the antigens without the risk of you getting the disease
• The body then holds memory cells, which can be reproduced rapidly if the body is ever infected with that disease again

Question 3

What do vaccines protect against?

Answer 3

Both viral and bacterial pathogens

Question 4

What does the MMR vaccine protect against?

Answer 4

Measles, mumps and rubella