Costa Rica chikungunya outbreak: travel health warning for tourists

Travellers visiting Costa Rica are being urged to take enhanced health precautions as a chikungunya outbreak in the country’s northwest raises concerns.

The European Centre for Disease Prevention and Control (ECDC) has reported 300 cases in Costa Rica in 2026, with local transmission identified in Alajuela and Guanacaste provinces. This compares with eight cases reported in 2025. The US Centers for Disease Control and Prevention (CDC) maintains a level 2 travel health notice, advising visitors to practise enhanced precautions.

The outbreak is particularly relevant to holidaymakers visiting Guanacaste’s Pacific coast, including Playa Langosta and the popular Tamarindo area. Costa Rica’s Ministry of Health has confirmed infections involving foreign visitors and has intensified mosquito-control measures.

Chikungunya is transmitted through infected mosquito bites and can cause fever, severe joint pain, headaches, and muscle pain. Although many patients recover within days, joint symptoms can persist for months or longer, potentially affecting planned excursions and return journeys.

The UK Foreign, Commonwealth & Development Office (FCDO) advises travellers to ensure they have appropriate insurance for local treatment and unexpected medical evacuation.

Health authorities recommend effective insect repellent, long-sleeved clothing, and screened or air-conditioned accommodation. Eligible travellers should consult a healthcare professional about vaccination before departure.

The warnings do not automatically mean holidays should be cancelled. However, travellers should monitor official updates, seek medical advice when appropriate, and contact their insurer promptly if illness affects their trip.