Chikungunya Risks Impacting Summer Vacation Plans 2025

Chikungunya, an arboviral disease previously unknown in the Americas, became an epidemic in the Region after its first indigenous case was reported in December 2013. 

Since that time, the mosquito-transmitted virus has spread throughout most of the Region, and remains a key factor when planning summer vacations in 2025.

As of April 20, 2025, the Pan American Health Organization has confirmed 103,659 chikungunya cases and two related fatalities. Last year, over 420,000 cases and 236 fatalities were reported in the Region.

The U.S. Centers for Disease Control and Prevention (CDC) lists countries and territories with evidence of human-to-human transmission within the last five years.

The U.S. CDC states that most people infected with the chikungunya virus develop symptoms. People at risk for severe disease include newborns infected around the time of birth, older adults, and people with medical conditions.

To prevent this disease, effective chikungunya vaccines have been approved by the CDC and the U.S. FDA, and are commercially available at travel clinics and pharmacies as of 2025.