What percentage of patients develop a nosocomial infection in hospital?

• A. 5%
• B. 3%
• C. 7%
• D. 10%

Answer: (A)

Nosocomial infections, or healthcare-associated infections, are infections patients acquire during a hospital stay that were not present or incubating on admission. The rate reflects how often patients develop new infections in the hospital, influenced by invasive devices, procedures, length of stay, and patient vulnerability. A commonly cited average is about five percent of hospitalized patients. This aligns with the idea that while infection control has reduced risk, access to catheters, surgeries, and other interventions still creates opportunities for infection. Among the options, five percent best represents the typical hospital-wide average used in many guidelines and exam questions. The other percentages are generally less representative of the standard risk, though actual rates can vary by facility and patient mix.