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A Case of Septicaemia Infection Induced by Vancomycin-Resistant Streptococcus dysgalactiae subspecies equisimilis

Dai F, Fu X, Mao Y, Gao Y, Zhou H, Zhu W

Infection and drug resistance, 2026

Abstract

In recent years, reported infections caused by Streptococcus dysgalactiae subspecies equisimilis (SDSE)have notably increased. SDSE is a Group C or G β-hemolytic streptococcus, that frequently causes bloodstream infections and is highly susceptible to penicillins, cephalosporins and fluoroquinolones. In this study, we present the first reported case of vancomycin-resistant SDSE septicaemia, detailing its clinical diagnosis and treatment. A review of the relevant literature, noted that no other instances of vancomycin resistance in SDSE have been documented. It is hoped that this study will lead to further clinical consideration of vancomycin resistance.

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