Chikungunya Virus Outbreak Risk Grows Worldwide

Chikungunya Cases Increasing in Several Countries in the Americas

The Pan American Health Organization (PAHO) has issued an epidemiological alert following a sustained increase in chikungunya cases in several countries in the Americas since late 2025 and into early 2026. The alert also highlights the re-emergence of local transmission in areas that had not reported virus circulation in several years. While this trend is consistent with expected patterns in areas where the Aedes aegypti mosquito vector is prese…

Chikungunya Virus Outbreak Risk Grows Worldwide

A new review tracks expanding chikungunya transmission, chronic sequelae, diagnostics, and prevention advances through 2025.