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Which of the following is correct with respect to contact transmission? a. Transmission, which occurs through an infected organism biting a potential host, is known as indirect transmission

b. Transmission, which occurs through someone touching a door handle that is a reservoir for an infectious agent is known as direct transmission
c. Transmission, which occurs through a flea carrying an infection from one host to another, is known as vector borne transmission d. Transmission, which occurs through contaminated soil, is known as vector borne transmission ​

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Answer:

The correct answer is option b: Transmission, which occurs through someone touching a door handle that is a reservoir for an infectious agent is known as direct transmission.

Direct transmission refers to the spread of an infectious agent from one person to another through direct contact, such as touching, kissing, or sexual contact. It can also occur through droplet transmission, such as when an infected person coughs or sneezes and releases respiratory droplets that are then inhaled by others.

Indirect transmission (not option a) occurs when the infectious agent is spread through an intermediate source, such as contaminated objects or surfaces, or through an insect or other animal vector.

Vector-borne transmission (not option d) occurs when an infectious agent is transmitted to humans through the bite of an infected insect or other arthropod, such as a mosquito or tick.

Option c is correct in describing vector-borne transmission.

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