In which of the following diseases,close contact with infected persons or their belongings should be avoided?

Which of the following diseases can be controlled by the use of vaccines?

Which one of the following pairs of diseases can spread through blood transfusion?

What are the various public health measures,which you would suggest as a safeguard against infectious diseases?

Read the statements carefully and determine how many statements provide correct information.
$(1)$ In innate immunity,the cellular barrier is represented by four main types of cells.
$(2)$ The $BCG$ vaccine contains live attenuated Mycobacterium.
$(3)$ In $G-6-P$ dehydrogenase deficiency,$RBCs$ start to disintegrate (hemolysis).
$(4)$ Nicotine stimulates the adrenal gland.

Match the diseases with their respective pathogens or treatments.

List-$I$	List-$II$
$(a)$ Amoebiasis	$(i)$ Treponema pallidum
$(b)$ Diphtheria	$(ii)$ Use of sterile food
$(c)$ Cholera	$(iii)$ $DT$ vaccine
$(d)$ Syphilis	$(iv)$ Use of Oral Rehydration Therapy