Chronic Chagas Management — SCE Infectious Diseases MCQ
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Correct answer: C — Doxycycline 100 mg twice daily for 21 days; assess and presumptively treat sexual contacts from the preceding 4 weeks
Explanation lettering: C = shown as A · E = shown as B · A = shown as C · B = shown as E
A is correct. BASHH recommends doxycycline 100 mg twice daily for 21 days for symptomatic LGV and assessment, testing and presumptive 21-day treatment of contacts from the four weeks before symptom onset; a three-month window applies when the index infection is asymptomatic. B uses the uncomplicated non-LGV duration and the wrong contact window. C is an alternative schedule only in selected circumstances and makes treatment contingent on genotype. D treats possible gonorrhoea and shortens LGV therapy. E shortens treatment and applies the asymptomatic contact window to a symptomatic case. Follow-up continues until symptoms resolve.
Reference: BASHH: lymphogranuloma venereum guideline: https://www.bashh.org/resources/26/guidelines_lgv_2013