KA7- Immunisation

Question 1

Immunisation

Answer 1

The process by which a person develops immunity to a disease-causing organism

Question 2

Active immunity

Answer 2

The protection gained as a result of of the person producing their own antibodies

Question 3

Antigenic variation

Answer 3

Some pathogens can change their antigens. This means that memory cells are not effective against them.

Question 4

Role and impact of antigenic variation in influenza

Answer 4

Antigenic variation occurs in the influenza virus explaining why it remains a major public health problem and why individuals who are at risk require to be vaccinated every ear