US travellers have been warned to take precautions if visiting the Seychelles, Bolivia, or Suriname due to chikungunya outbreaks, with the CDC issuing level 2 advisories recommending vaccination. The virus, transmitted by mosquitoes, caused 186 deaths worldwide last year, according to the Pan American Health Organisation (PAHO).
The UK Health Security Agency (UKHSA) describes chikungunya as characterised by sudden fever and joint pain. While British authorities have not issued specific warnings for Bolivia, other territories like Réunion carry advisories. The virus cannot be passed from human to human, and cases have been reported in the Americas, Africa, Asia, and Europe.
In 2025, Brazil reported the most cases, followed by Bolivia, Argentina, and Peru. The European Centre for Disease Prevention and Control (ECDC) links European transmission to travellers returning from affected regions. PAHO recorded approximately 502,264 cases across 41 countries last year.
Symptoms include fever, joint swelling, muscle pain, headaches, nausea, fatigue, and rashes. Joint pain can last for days or persist for years. Most recover fully, but severe cases may require hospitalisation. Two vaccines are available in the UK for travellers aged 12 and over.
UKHSA's Hilary Kirkbride advises using insect repellent, covering skin, and sleeping under treated nets. Dr Richard Dawood of Fleet Street Clinic notes the vaccine offers long-lasting protection, though it is expensive. Pregnant people should reconsider travel due to risks to newborns.
