State the causative micro-organisms and modes of transmission of the following human diseases.
Polio, cholera, hepatitis B.
(a) Name any five human diseases caused by micro-organisms.Also name the causative micro-organisms and mode of transmission for each of these diseases.
(b) State the various ways of preventing the occurrence and spreading of communicalbe disease.
State the causative micro-organisms and modes of transmission of the following human diseases:
Measles.
(ix) Dengue.