Chikungunya cases increasing in several countries in the Americas; PAHO recommends preparedness

Washington, D.C., February 11, 2026 (PAHO) — 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.