Chikungunya fever is a *viral infection* caused by the *Chikungunya virus* (CHIKV). It is transmitted to humans through the bite of infected *Aedes* mosquitoes and is characterized by sudden onset of fever and severe joint pain, primarily affecting people in tropical and subtropical regions.
Transmission methods vary. Please consult CDC or WHO resources for specific information.
Contagious Period: Varies by disease
Real-time intelligence from global health monitoring and AI-powered surveillance
Data sources: BEACON, ProMED, WHO, CDC, and 50+ national health agencies
✓ Live data updated in real-time from global health sources
In 2025, Mayotte reported its first locally acquired chikungunya cases since the 2005–2006 outbreak, with 116 cases as of 4 May 2025 and incidence peaking around epidemiological week 20 before declining in a pattern consistent with seasonal variation in transmission. By early 2026, chikungunya virus circulation had intensified again amid favorable environmental conditions for Aedes spp. vectors, with 219 cases reported as of 27 February 2026.
Source: BEACON - View Full Report
Chikungunya first emerged in French Guiana in 2014, causing a major outbreak that infected an estimated 16 000 people between February 2014 and October 2015, with numerous hospitalizations. The first autochthonous (locally acquired) case since then was reported in January 2026 with 25 reported cases by EW 09.
Source: BEACON - View Full Report
Suriname is experiencing a chikungunya outbreak with 134 laboratory-confirmed cases and one death as of 30 Jan 2026. The outbreak is concentrated in Paramaribo and two other areas, affecting all age groups, with the highest incidence among adults aged 25–64 years. Authorities project a three-to-four-month peak transmission period and are implementing vector control measures, complemented by community engagement, to limit spread.
Source: BEACON - View Full Report
A new study reveals that the chikungunya virus can be transmitted at temperatures 2.5°C lower than previously estimated, extending the potential transmission season across much of Europe where the Asian tiger mosquito, Aedes albopictus, is established. France and Italy experienced unprecedented outbreaks in 2025, with hundreds of autochthonous (locally acquired) cases, marking a dramatic escalation from the historical pattern of sporadic imported infections. The combination of expanding mosquito populations, longer transmission seasons, and Europe's rapid warming creates conditions for the potential establishment of endemicity rather than isolated annual outbreaks.Country reportsFranceGermanyItalyRussian FederationSpainglobal
Source: BEACON - View Full Report
Bolivia has reported between several hundred and several thousand cases of chikungunya virus (CHIKV) infection per year in recent seasons, with transmission concentrated mainly in Santa Cruz and Cochabamba, and, to a lesser extent, in Beni, Pando, Chuquisaca, La Paz, and Tarija. Case numbers typically peak during the January–May rainy season, when warm, wet conditions favor Aedes proliferation. Guillain-Barré syndrome cases associated with CHIKV have been reported in Bolivia.
Source: BEACON - View Full Report
Chikungunya fever has shown a resurgence in the Americas since late 2025, with 313 132 cases reported in 2025, including 113 926 laboratory-confirmed cases and 170 deaths across 18 countries and one territory, and continued transmission into early 2026. Renewed and sustained activity has been documented in Brazil, Bolivia, Cuba, Suriname, and parts of the Guiana Shield, including the re-establishment of autochthonous transmission in areas that had not reported local cases for nearly a decade. PAHO highlights persistent vulnerability driven by the widespread presence of Aedes aegypti, the concurrent circulation of other arboviruses, and ongoing ecological and climatic factors, underscoring the need for strengthened surveillance, vector control, and preparedness across the region.Country reportsArgentinaBoliviaCosta RicaCubaDominican RepublicFrench GuianaMartiniqueSurinameUSAglobal
Source: BEACON - View Full Report
Seychelles is experiencing a chikungunya resurgence, with multiple cases detected among returning travelers between December 2025 and February 2026, indicating sustained local transmission. This nationwide rise in chikungunya cases since mid-December 2025 has also been recognized by the Seychelles Ministry of Health, although detailed case counts (suspected, probable, confirmed) are lacking.
Source: BEACON - View Full Report
Track Chikungunya fever and 200+ other diseases with personalized alerts
Trusted information from leading health organizations
Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-03-05
Get real-time alerts and intelligence on Chikungunya fever and 200+ other diseases. Used by healthcare systems, EMS, schools, and travelers worldwide.