Which term describes disease spread via an animal vector such as a mosquito?

• A. Vector-Borne Transmission
• B. Direct Transmission
• C. Airborne Transmission
• D. Vehicle Transmission

Answer: (A)

This concept is about how diseases spread through a living creature that transfers the pathogen between hosts. When a mosquito or similar vector bites an infected person or animal and later bites another, the pathogen is carried through that living organism and delivered to the new host. That’s what makes it vector-borne transmission: the disease moves via a biological vector rather than directly from person to person.

This differs from direct transmission, which requires immediate contact between people; airborne transmission, which travels through the air as droplets or aerosols; and vehicle transmission, which uses inanimate objects or substances like contaminated water, food, or surfaces. Vector-borne diseases include malaria, dengue, and Zika, all carried by mosquitoes in the transmission cycle.