Question

What are vectors? Name two diseases spread by vectors.

Answer 1

Vectors:

1. Vectors are carriers of disease causing organisms.
2. They carry these organisms from an infected person to an uninfected person.
3. Example: Mosquito is the vector for the malarial parasite and transmits it by biting.

Diseases spread by vectors:

1. Malaria

• It is a disease spread by vector (female Anopheles mosquitoes).
• The malarial parasite is present in the salivary glands of the mosquitoes.

2. Dengue

• It is a disease spread by vector (female Aedes mosquitoes).