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

The correct option is B

Hepatitis and AIDS

The correct option is B.

Explanation of correct option:

1. Hepatitis and AIDS belong to the group of infectious diseases that are induced by viruses.
2. Hepatitis is caused by the hepatitis virus and is transmitted through blood transfusion and sexual contact.
3. AIDS is caused by HIV (Human immunodeficiency virus) and is spread through blood transfusion, sexual contact, and breastfeeding mother to babies.

Explanation of incorrect options:

Option A:

1. Cholera is a disease caused by the bacteria Vibrio cholerae and hepatitis is caused by the hepatitis virus.
2. It is spread through contaminated food and water, but hepatitis is spread by blood transfusions.

Option C:

1. Diabetes mellitus is not an infectious disease and it cannot be transferred from one person to another
2. Malaria is an infectious disease induced by a parasite plasmodium vivax, and it is spread through mosquito bites.

Option D:

1. Hay fever is not an infectious disease and it is caused by the overreaction of the body to dust, pollen, or other substances causing allergies.

Final answer: Hepatitis and AIDS are a pair of diseases that can spread through blood transfusion