What are the non-infectious causes of diseases?

How can we prevent water-borne and vector-borne infections?

Associate the following diseases/infections with their causative agents:
$(a)$ Sleeping sickness
$(b)$ $SARS$
$(c)$ Kala-azar
$(d)$ Acne
$(e)$ $AIDS$
$(f)$ Dengue fever
$(g)$ Malaria
$(h)$ Brain fever
$(i)$ Chickenpox
$(j)$ Polio

Making anti-viral drugs is more difficult than making anti-bacterial medicines because

Which one of the following diseases is caused by protozoans?

Name diseases which are caused by:
$(i)$ virus
$(ii)$ bacteria
$(iii)$ protozoa.
(Give two examples for each)