Nosocomial infections are:

• A. Acquired at social events like concerts.
• B. Acquired while working in a hospital.
• C. Infections that a patient is admitted to a hospital for.
• D. Acquired by a patient admitted to a hospital.

Answer: (D)

Verified step by step guidance

1. Understand the definition of nosocomial infections: these are infections that are acquired in a hospital setting, specifically by patients during their stay in the hospital.
2. Differentiate nosocomial infections from community-acquired infections, which occur outside of healthcare settings such as social events or everyday life.
3. Recognize that infections a patient already has upon admission to the hospital are not considered nosocomial, because they were not acquired during the hospital stay.
4. Focus on the key aspect that nosocomial infections develop after admission, meaning the patient was initially free of the infection when entering the hospital.
5. Conclude that the correct description of nosocomial infections is 'acquired by a patient admitted to a hospital,' emphasizing the hospital environment as the source of infection.