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Cambridge Study Says Sexually Transmitted Shigella Is Spreading Faster in UK
Researchers found sexually transmitted strains rose 15% faster a year and 70% resisted at least one antibiotic, UK health officials said.
On June 20, 2026, a study led by the University of Cambridge and the UK Health Security Agency identified sexually transmitted Shigella as a "distinct public health threat" requiring targeted clinical screening and prevention strategies.
Researchers found sexually transmitted strains spread 117 kilometers over 2.5 years—more than twice as fast as non-sexual variants—while more than 70 percent resisted at least one clinically relevant antibiotic.
In 2025, reported cases of sexually transmitted Shigella in England rose to 2,560, increasing from 2,318 in 2024 and 2,052 in 2023, highlighting a growing burden on sexual health services.
Marc Tweed of the Terrence Higgins Trust called the rise a "real cause for concern," urging individuals to contact a local sexual health clinic if symptoms develop.
Professor Kate Baker advises avoiding sexual activity for two weeks after recovery, emphasizing this protocol is critical to curbing transmission cycles among communities most affected.