Vector-borne transmission is defined as transmission to a host by a vector such as a mosquito, flea, or tick.

Vector-borne transmission is defined as transmission to a host by a vector such as a mosquito, flea, or tick.

• A. When an infectious agent is transmitted to a host by a vector such as a mosquito, flea, or tick
• B. By contaminated water
• C. By direct contact only
• D. By inhalation of aerosols

Answer: (A)

Vector-borne transmission means a living organism, usually an arthropod such as a mosquito, flea, or tick, carries the infectious agent from one host to another and transmits it during a bite or contact. The vector is essential to moving the pathogen between hosts, which is why diseases like malaria, dengue, and Lyme disease are described this way. This differs from other routes: contaminated water is waterborne, direct contact involves transfer without a vector, and inhalation of aerosols is airborne transmission. So the statement that defines vector-borne transmission is that the infectious agent is transmitted to a host by a vector such as a mosquito, flea, or tick.

Vector-borne transmission means a living organism, usually an arthropod such as a mosquito, flea, or tick, carries the infectious agent from one host to another and transmits it during a bite or contact. The vector is essential to moving the pathogen between hosts, which is why diseases like malaria, dengue, and Lyme disease are described this way. This differs from other routes: contaminated water is waterborne, direct contact involves transfer without a vector, and inhalation of aerosols is airborne transmission. So the statement that defines vector-borne transmission is that the infectious agent is transmitted to a host by a vector such as a mosquito, flea, or tick.