CDC health alert (level 2) — Chikungunya (Costa Rica)

Chikungunya cases have been confirmed in Costa Rica, with the outbreak affecting a wide area across the country. The virus is transmitted by mosquitoes, primarily during dawn and dusk hours. Health authorities have classified this as a level 2 alert, indicating sustained transmission in the region.

If you are on site, take precautions to avoid mosquito bites: use insect repellent on exposed skin, wear long sleeves and trousers when possible, and stay in air-conditioned or screened accommodations. Be aware of symptoms including fever, joint pain, and rash, which can appear three to seven days after infection. Seek medical attention if you develop these symptoms.

Follow local health authority guidance and check official travel advisories regularly. For medical concerns, contact local healthcare providers or your embassy. Contact your health provider before returning home if you suspect exposure. This alert is based on CDC travel health data.