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
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Guatemala has confirmed its first chikungunya case in a decade, detected in Catarina, San Marcos department, near the Mexican border where cases are also occurring. Four additional suspected cases across multiple departments suggest potential for broader geographic spread, though current numbers remain far below historical outbreak levels. The re-emergence occurs amid regional increases in chikungunya transmission across the Americas and in a population with minimal recent exposure.
Source: BEACON - View Full Report
This event envelope contains reports on chikungunya in Brazil.
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
Chikungunya transmission has been confirmed in the Dourados Indigenous Reserve in Mato Grosso do Sul, where nearly 100 cases and one death have been reported among Guarani‑Kaiowá communities, along with increased healthcare demand. This outbreak occurs amid broader arboviral activity in Brazil’s Central‑West Region, with chikungunya-related deaths also reported in neighboring Mato Grosso state. Environmental factors, population movement, and proximity to international borders may support ongoing virus circulation, highlighting the importance of continued surveillance and targeted vector control.
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
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
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
In Feb 2026, Saint Lucia confirmed its first chikungunya case in five years. The isolated case occurs against a backdrop of increasing regional transmission, with PAHO issuing an alert for the Americas. Enhanced surveillance and vector control operations are underway to prevent local transmission before the approaching rainy season, when mosquito populations typically peak.
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
This event envelope documents cases, trends and outbreaks on Chikungunya in Mauritius.
Source: BEACON - View Full Report
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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: 2026-04-19
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