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M. abscessus Treatment Difficulty — SCE Infectious Diseases MCQ

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HardRespiratory InfectionM. abscessus Treatment DifficultySCE Infectious Diseases

Influenza A is confirmed in three residents of a care home. A vaccinated 81-year-old with chronic heart failure remains asymptomatic but has had ongoing close exposure. The Health Protection Team recommends prophylaxis and renal function is normal. Which plan is appropriate?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: B — Oseltamivir 75 mg once daily for 10 days despite vaccination

Explanation lettering: E = shown as A · A = shown as C · C = shown as E

B is correct. In a localised care-home outbreak, UKHSA allows prophylaxis regardless of vaccination status; standard oseltamivir prophylaxis in an adult with normal renal function is once daily for 10 days. A is the treatment schedule. C is not an adequate prophylactic course. D ignores the outbreak exception. E imports a different jurisdiction’s open-ended institutional rule.

Reference: UKHSA seasonal influenza antiviral guidance: https://www.gov.uk/government/publications/influenza-treatment-and-prophylaxis-using-anti-viral-agents/guidance-on-use-of-antiviral-agents-for-the-treatment-and-prophylaxis-of-seasonal-influenza