Warning: England Sees Major Spike in Sexually-Spread Superbug

Cases of the highly contagious Shigella superbug have surged by 25% in England over the last two years, prompting a public health warning. Official data recorded 2,560 cases in 2025, an increase from previous years. The infection, which causes diarrhea, stomach cramps, and fever, is primarily spread through sexual contact, particularly affecting gay, bisexual, and other men who have sex with men.

All regions in England have reported Shigella cases, with a concentration in London. Concerns are mounting over antibiotic-resistant strains; in 2025, the highest annual toll for such cases was recorded, with significant resistance noted in Shigella sonnei and Shigella flexneri.

Health officials emphasize that good hygiene during and after sex, along with condom use, can reduce risk. Prompt testing for sexually transmitted infections is also advised. While primarily sexually transmitted, Shigella can also spread through contaminated food and surfaces, as seen in recent international outbreaks.

Individuals experiencing symptoms are advised to stay hydrated, rest, and avoid sexual contact for a week after symptoms cease. They should also avoid spas, hot tubs, and sharing towels. Preparing food for others should also be avoided until symptoms resolve.