Vector-borne transmission involves spread of infection by what?

Vector-borne transmission involves spread of infection by what?

• A. Animals or insects that carry the organism
• B. Contaminated water
• C. Airborne droplets
• D. Contaminated surfaces

Answer: (A)

Vector-borne transmission relies on a living carrier that transfers the pathogen between hosts, typically an animal or insect such as a mosquito, tick, or flea. The pathogen is picked up when the carrier feeds or contacts an infected host and is then passed to a new host, often through a bite or direct contact. This is distinct from spreading via contaminated water, airborne droplets, or contaminated surfaces, which do not involve a living intermediary. Examples include malaria and dengue being transmitted by mosquitoes, and Lyme disease by ticks.

Vector-borne transmission relies on a living carrier that transfers the pathogen between hosts, typically an animal or insect such as a mosquito, tick, or flea. The pathogen is picked up when the carrier feeds or contacts an infected host and is then passed to a new host, often through a bite or direct contact. This is distinct from spreading via contaminated water, airborne droplets, or contaminated surfaces, which do not involve a living intermediary. Examples include malaria and dengue being transmitted by mosquitoes, and Lyme disease by ticks.