Health authorities in Costa Rica have confirmed the nation’s first yellow fever case in nearly seventy years. The announcement was made by the Ministry of Health on Sunday. The patient is a 29-year-old woman from the United States who had recently traveled to Peru’s Amazon region.
She exhibited symptoms starting October 7 and arrived in Costa Rica the following day. Tests by the National Institute for Research in Nutrition and Health (INCIENSA) confirmed the yellow fever infection, necessitating her hospitalization in a facility operated by the Social Security Fund (CCSS). Medical professionals are providing her with specialized care, and her condition is being closely monitored.
Costa Rica’s Response to Yellow Fever Case
- The patient did not receive a yellow fever vaccine, which is crucial for travelers to high-risk areas.
- Yellow fever is transmitted via mosquito bites, leading to symptoms such as fever, headaches, and muscle pain.
- In severe cases, it can result in organ failure, jaundice, and bleeding.
This incident underscores the risks associated with traveling to regions where yellow fever is prevalent. Costa Rica’s health system has activated surveillance measures to track potential contacts to prevent further spread. In addition, mosquito control efforts have intensified, particularly focusing on eliminating habitats for Aedes and Haemagogus species, the primary carriers of the virus.
Vaccination and Travel Advisory
Health officials urge travelers to get vaccinated against yellow fever at least 10 days before visiting endemic areas. The recent confirmation of yellow fever cases aligns with the rise of infections across the Americas. According to the Pan American Health Organization, over 200 confirmed cases were reported in the region this year, with a fatality rate near 40%.
Countries like Colombia, Brazil, and Peru have experienced yellow fever outbreaks, leading Costa Rica to strengthen its entry requirements. Since May 2025, travelers from high-risk nations must provide proof of vaccination or have spent time in low-risk areas prior to entering Costa Rica.
Historical context reveals that the last recorded yellow fever cases in Costa Rica occurred in 1956, during a small outbreak in rural communities. Robust vaccination campaigns and vector control measures have kept the country yellow fever-free for generations.
Guidelines for Travelers
- Check vaccination status before international travel.
- Clinics in Costa Rica administer yellow fever vaccinations, which offer lifelong protection after one dose.
- Consult local health departments or the Centers for Disease Control and Prevention for further guidelines.
Health Minister Mary Munive emphasized the importance of caution without creating undue panic. “We have the tools to manage this situation,” she stated, indicating preparedness and coordination with international partners.
Travelers, particularly those from non-endemic regions, should seek medical attention immediately if they develop symptoms after recent travel, ensuring to mention their itineraries. This incident serves as a reminder of the interconnected nature of global health challenges.
As tourism in Costa Rica rebounds, attracting millions annually to its natural landscapes, maintaining awareness and protection is vital for public safety. Officials will continue to monitor the situation and provide updates, as the focus remains on containment and education to prevent further incidents.
