Recent signals
Foreign-ministry advisories
Practical guidance
What the disease sub-score covers
Costa Rica’s disease sub-score is 82/100 (low band). It combines endemic baseline (the diseases that are always present at some level) with acute outbreak signals from WHO Disease Outbreak News, CDC traveller notices, and ECDC bulletins. A drop in the sub-score typically reflects a fresh outbreak rather than a worsening baseline; the events feed above lists what is driving today’s number. Endemic risk is what your vaccinations and basic hygiene protect against; outbreak risk is what determines whether the trip itself should be reconsidered.
Food, water, and mosquitoes
The three traveller-illness vectors that account for most self-reported sickness: contaminated water (tap, ice cubes, salad washed in tap), undercooked food (especially shellfish and street meat), and mosquito-borne disease (dengue, chikungunya, malaria, Zika). The defensive rules are well established: bottled or filtered water only in higher-risk destinations, cooked food served hot, peel fruit yourself, and use DEET- or picaridin-based repellent in dengue-active areas at dawn and dusk. The Costa Rica vaccinations page lists which immunisations specifically reduce risk for this country.
If an outbreak is in the news
A new WHO Disease Outbreak News article triggers a drop in the sub-score within 24 hours of publication; the events feed shows the source. Read the WHO article rather than secondary coverage: outbreak severity often gets amplified in travel press relative to the agency’s actual assessment. The Field Manual guide When an outbreak hits a destination you’ve booked walks through the decision tree: when to cancel, when to push, when to alter the itinerary.
Related for Costa Rica
Long-form context
Costa Rica is one of the safer destinations in Latin America and the most developed eco-tourism economy in Central America. The country abolished its army in 1948, runs a strong public-health system, and consistently ranks as one of the happiest countries in the world. The structural risks are concentrated and addressable: the San José petty-crime and smash-and-grab pattern, beach-area car break-ins and bag theft at Manuel Antonio, Tamarindo, Jaco, and Dominical, Pacific rip currents that kill several foreign tourists each year, the OVSICORI volcano monitoring picture (Poás, Arenal, Irazú, Turrialba, Rincón de la Vieja all active), the Caribbean coast (Limón) higher crime baseline, and the standard tropical-disease considerations (dengue endemic). This guide unpacks the entry mechanics, the regional risk map, the volcano and beach safety logic, and the practical contacts for a Costa Rican itinerary.
Frequently asked about Costa Rica
Are there any active disease outbreaks in Costa Rica?
Costa Rica's disease sub-score is 82/100. Active outbreaks are listed in the recent-signals feed above, sourced from WHO Disease Outbreak News, CDC traveller notices, and ECDC bulletins. A drop in the sub-score typically reflects a fresh outbreak rather than a worsening baseline.
What diseases are common in Costa Rica?
Endemic disease patterns vary by region within Costa Rica. The three traveller-illness vectors that account for most reported sickness anywhere: contaminated water, undercooked food, and mosquito-borne disease (dengue, chikungunya, malaria, Zika depending on region). The vaccinations page lists which immunisations specifically reduce risk for this country.
Is the water safe to drink in Costa Rica?
Tap water safety varies by region and infrastructure. In most non-OECD destinations, default to bottled or filtered water for drinking, ice, and brushing teeth; salads washed in tap water carry the same risk. The country safety guide's healthcare chapter covers the specific destination assessment.