Indirect transmission can occur through which examples?

Indirect transmission can occur through which examples?

• A. Contaminated surfaces or mosquitoes
• B. Direct contact with an infected person
• C. Airborne droplets
• D. Animal bites only

Answer: (A)

Indirect transmission happens when the pathogen moves from one host to another through an intermediary object or organism. Contaminated surfaces, or fomites, can carry pathogens for hours or days; touching the surface and then touching the face can introduce the agent to the body. A mosquito acting as a vector also fits indirect transmission: it picks up the pathogen from one person or animal and transmits it to another during a bite, without people having direct contact. Direct contact with an infected person involves touch or exchange of fluids between people, which is direct transmission. Airborne droplets involve expelling respiratory material that directly reaches another person in close proximity, typically counted as direct or droplet transmission rather than via an intermediary surface or vector. An animal bite is a direct event from animal to person, not indirect.

Indirect transmission happens when the pathogen moves from one host to another through an intermediary object or organism. Contaminated surfaces, or fomites, can carry pathogens for hours or days; touching the surface and then touching the face can introduce the agent to the body. A mosquito acting as a vector also fits indirect transmission: it picks up the pathogen from one person or animal and transmits it to another during a bite, without people having direct contact.

Direct contact with an infected person involves touch or exchange of fluids between people, which is direct transmission. Airborne droplets involve expelling respiratory material that directly reaches another person in close proximity, typically counted as direct or droplet transmission rather than via an intermediary surface or vector. An animal bite is a direct event from animal to person, not indirect.