Questions: Select all that apply: Which of the following is an example of a fomite? (A) towels (B) doorknob (C) catheter (D) mosquitoes

The answer is (A), (B), and (C): towels, doorknob, and catheter.

Explanation for each option:

(A) Towels - Correct. Towels can act as fomites because they can carry infectious agents from one person to another when shared or improperly cleaned.

(B) Doorknob - Correct. Doorknobs are common fomites as they are frequently touched by multiple people, potentially transferring pathogens.

(C) Catheter - Correct. Catheters can be fomites if they become contaminated and are not properly sterilized, leading to the transmission of infections.

(D) Mosquitoes - Incorrect. Mosquitoes are not considered fomites. They are biological vectors that can transmit diseases through their bites, not through inanimate surfaces.

In summary, fomites are inanimate objects that can carry infectious agents, and options (A), (B), and (C) fit this definition.