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Norovirus — SCE Infectious Diseases MCQ

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EasyInfection Prevention & ControlNorovirusSCE Infectious Diseases

An outbreak of norovirus gastroenteritis occurs on a hospital medical ward. Six patients and three staff members are affected. What is the most important single infection control measure?

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Correct answer: E — Ward closure to new admissions and enhanced cleaning with chlorine-based disinfectant

Norovirus outbreaks require ward closure to new admissions to prevent further spread. Enhanced environmental cleaning with a chlorine-based disinfectant (1000 ppm hypochlorite) is essential as norovirus is resistant to alcohol-based hand gels and many standard disinfectants. Hand washing with soap and water is important but insufficient alone. The ward should remain closed until 48 hours after the last new case. UKHSA guidance prioritises ward closure and enhanced cleaning as the most impactful combined measure.

Reference: UKHSA 2024 – Guidelines for managing norovirus outbreaks in healthcare settings; NICE QS113 – Infection prevention and control