a) The principle of vaccination is to produce immunity against a disease. Explain. b) "Abnormally large number of WBC's in the blood is usually an indication of some infection in our body." Comment on the statement. [4 MARKS]

a) The principle of vaccination is to produce immunity against a disea

1.	a) The principle of vaccination is to produce immunity against a disease. Explain. b) "Abnormally large number of WBC's in the blood is usually an indication of some infection in our body." Comment on the statement. [4 MARKS]
Answer» a) The principle of vaccination is to produce immunity against a disease. Explain. b) "Abnormally large number of WBC's in the blood is usually an indication of some infection in our body." Comment on the statement. [4 MARKS]