Which of the following is an example of an indirect transmission of infection?

Indirect transmission of infection refers to the spread of pathogens through an intermediate object or surface, rather than through direct contact with an infected individual. The correct answer highlights a scenario in which the transmission occurs when an individual touches a shared surface that may harbor infectious agents, such as doorknobs, countertops, or equipment not properly sanitized after use.

When someone touches this contaminated surface, they can unknowingly pick up pathogens that can lead to infection. This type of transmission emphasizes the importance of hygiene and regularly cleaning common areas in any setting, particularly in environments like salons or healthcare facilities, where the risk of infection can be heightened.

In contrast, other options describe methods of transmission that involve direct contact with an infected person or contaminated items, which does not fit the definition of indirect transmission. Understanding the distinction between direct and indirect transmission is crucial in implementing effective infection control measures.