Question

(a) Discuss briefly the principle of immunization.

(b) Mention any two diseases that can be prevented by immunization.

Answer 1

a When the immune system first sees an infectious microbe, it responds against it and then remembers it specifically The next time the particular microbe or its close relative enters the body ,the immune system responds more vigorously. This eliminates the infection more quickly than the first time around. This is the principle of immunisation

b Polio, smallpox