Extended-Spectrum β-Lactamase Shigella sonnei Cluster Among Men Who Have Sex With Men in Chicago, Illinois, July-October 2022.

Faherty, Emily A G; Kling, Kendall; Barbian, Hannah J; Qi, Chao; Altman, Shana; Dhiman, Vineet K; Teran, Richard; Anderson, Kendall et al. · J Infect Dis · 2025

case_series · Level IV

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Abstract

Drug-resistant shigellosis is increasing, particularly among men who have sex with men (MSM). During July-October 2022, an extended-spectrum β-lactamase-producing Shigella sonnei cluster of 9 patients was identified in Chicago, of whom 8 were MSM and 6 were festival attendees. The cluster also included 4 domestic travelers to Chicago. Sexual health care for MSM should include shigellosis diagnosis and prevention.

Medical subject headings