Which organism is most commonly responsible for travelers diarrhea?

Correct Answer: A

Rationale: Enterotoxigenic E. coli (ETEC) is the most common cause of travelers' diarrhea worldwide.

Correct Answer: B

Rationale: CMV commonly causes retinitis in immunocompromised patients, especially HIV/AIDS.

Correct Answer: D

Rationale: Immunization is a preventive measure for individuals, not a standard precaution applied during patient care.

Correct Answer: D

Rationale: Hand antisepsis is indicated in all these scenarios to ensure sterile conditions and prolonged pathogen reduction.

Correct Answer: D

Rationale: Health education in infection control aims to raise awareness, involve all stakeholders in prevention efforts, and ensure continuous monitoring by health professionals, making D the most comprehensive and correct answer.