Nosocomial infection refers to what?

• A. infection acquired in the community
• B. hospital acquired infection
• C. any viral infection
• D. a type of cleaning method

Answer: (A)

Nosocomial infection means an infection that a patient acquires during a stay in a hospital or other healthcare facility, not present or incubating at the time of admission. It usually becomes evident 48 hours or more after admission (and can occur within 30 days after a procedure). This distinction matters because it identifies infections linked to the hospital environment and care processes, guiding prevention and control measures.

In the given options, infection acquired in the community describes a community-acquired infection, which is not nosocomial. The other choices—any viral infection or a cleaning method—do not capture the hospital-linked timing and setting that define nosocomial infections.