Health officials have confirmed that Chikungunya, a mosquito-borne virus, has more than doubled in the UK this year. At least 73 cases were reported in the first six months of 2025, compared to just 27 last year. Most patients had recently traveled to Sri Lanka, India, or Mauritius.
London recorded the highest number of cases, with others reported in the South East and West Midlands. While the disease is rarely fatal, symptoms can include fever, severe joint pain, fatigue, and rashes. “All it takes is one mosquito bite,” warned prevention expert Howard Carter.
Chikungunya is spread by the Aedes mosquito, which also carries dengue and Zika. The UK Health Security Agency stressed that mosquitoes cannot survive long-term in Britain’s climate, meaning the risk of a large outbreak remains low.
Globally, cases are rising due to warmer weather and increased travel. China has already reported thousands of infections this summer. Experts say repellents, protective clothing, and removing standing water are the best defenses.
Will climate change make mosquito-borne diseases like Chikungunya a growing threat closer to home?
