Question

State the causative micro-organisms and modes of transmission of the following human diseases.

Polio, cholera, hepatitis B.

Answer 1

Causative micro-organisms and modes of transmission of the following diseases:

Polio:

1. ​Polio is caused by Polio virus.
   
2. This virus infects the central nervous system of the individual.
3. It can be transmitted through direct contact with someone infected with the virus and through contaminated food and water.

Cholera:

1. Cholera is caused by a bacterial pathogen called Vibrio cholerae.​
2. It affects the alimentary system of the individual.
   
3. It can be transmitted through contaminated food and water.

Hepatitis B:

1. Hepatitis B is caused by hepatitis B virus (HBV).
   
2. This virus affects the liver of the infected individuals.
3. It is spread from the mother to child during birth, as well as through contact with blood or other body fluids during sex with an infected partner, unsafe injections or exposure to sharp instruments.