Sunday, November 30, 2025

The Sudden Dominance of bla CTX–M Harbouring Plasmids in Shigella spp. Circulating in Southern Vietnam

Authors: Nguyen Thi Khanh Nhu, Ha Vinh, Tran Vu Thieu Nga, Richard Stabler, Pham Thanh Duy, Le Thi Minh Vien, H. Rogier van Doorn, Ana Cerdeño-Tárraga, Nicholas Thomson, James Campbell, Nguyen Van Minh Hoang, Tran Thi Thu Nga, Pham Van Minh, Cao Thu Thuy, Brendan Wren, Jeremy Farrar, Stephen Baker

DOI: 10.1371/journal.pntd.0000702

Abstract Summary

Two CTX-M beta-lactamase genes are spreading among Shigella bacteria in Vietnamese children, carried on simple conjugative plasmids that transfer easily between bacteria. This resistance threatens third-generation cephalosporins, commonly used empiric antibiotics in Ho Chi Minh City, which should no longer be considered for dysentery treatment in this setting.

Why Brain? 🧠

CTX-M resistance genes spread rapidly in Shigella in Vietnam via simple plasmids, rendering commonly-used third-generation cephalosporins ineffective for treating dysentery in this region.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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