Choosing Wisely: Effectiveness and Safety of Antibiotic Prophylaxis in Close Contacts of Invasive Group A Streptococci Infection.

Birck, Marina G; Moura, Cristiano S; Winthrop, Kevin L; Machado, Marina A A; Neville, Autumn; Bernatsky, Sasha · Clin Infect Dis · 2025

retrospective_cohort · Level III

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Abstract

Antibiotic prophylaxis is often recommended for close contacts of index cases of invasive Streptococcus pyogenes infections. Using MarketScan data (2010-2019), we found no difference in infection rates between those who received and those who did not receive antibiotics but a 3-fold increased risk of adverse events in those who did receive antibiotics.

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