Variants of sexually transmitted Shigella are spreading more rapidly among sections of gay men in England than variants contracted through traditional routes including travel abroad, a study has found.Shigella is a genus of bacteria that causes shigellosis, bloody or prolonged diarrhoea that can lead to severe dehydration. It is highly contagious and is transmitted through faecal-oral contact.It has historically predominantly affected children in low and middle income countries and been a sporadic travel associated illness in other countries. But sexually transmitted strains have been rising in high income countries since the 2000s.The UK Health Security Agency has warned of a recent “sharp rise “in laboratory diagnoses of Shigella . There were 2560 recorded cases in 2025, up from 2318 in 2024 and 2052 in 2023.1The new study, published in the journal …
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