Chikungunya resurgence highlights gaps in Aedes surveillance and control in South America
Over the past decade, chikungunya has re-emerged as a major public health concern in the Americas.1 In 2025 alone, more than 313,000 cases and 170 deaths were reported across 18 countries, according to the Pan American Health Organization (PAHO). Transmission continued to expand in 2026, particularly in Suriname, Bolivia, Brazil, and Argentina (Fig. 1). Although promising results have recently been obtained with chikungunya vaccines, several challenges still impede large-scale implementation, including the absence of WHO recommendations, safety concerns in certain populations, manufacturing and supply constraints, and limited data regarding efficacy, long-term protection, and optimal vaccination strategies for endemic areas and high-risk populations.
Authors
- Martha Lucía Quiñones Pinzón
- Luisa Figueroa
- Miriam Palomino Salcedo (ORCID: https://orcid.org/0009-0001-7184-779X)
- Stéphane Duchon (ORCID: https://orcid.org/0000-0002-0140-1020)
- Gabriela Willat
- Luciana dos Santos Dias (ORCID: https://orcid.org/0000-0002-4824-9062)
- Christian R. González (ORCID: https://orcid.org/0000-0003-2582-6071)
- Emmanuel Roux (ORCID: https://orcid.org/0000-0003-2266-8207)
- José Bento Pereira Lima (ORCID: https://orcid.org/0000-0002-5015-3019)
- Ademir Jesus Martins (ORCID: https://orcid.org/0000-0001-5739-1215)
- Jean‐Bernard Duchemin (ORCID: https://orcid.org/0000-0001-5044-4855)
- D Morales
- Kartika Doerdjan-Ramoutar
- Ronald Lopez
- Audrey Lenhart
- Tashanna Bowman
- Martha Ahumada
- Nilsa González-Brítez
- Laura Harburguer
- Vincent Corbel
Institutions
- Centers for Disease Control and Prevention (US)
- Centre National de la Recherche Scientifique (FR)
- Institut Pasteur (FR)
- Université d'Avignon et des Pays de Vaucluse (FR)
- Université de Montpellier (FR)
- Metropolitan University of Educational Sciences (CL)
- Anton de Kom University of Suriname (SR)
- Universidad Nacional de Colombia (CO)
- Institut Pasteur de la Guyane (GF)
- Instituto de Estudios Avanzados (VE)
- Ministerio de Salud Pública (UY)
- Institute of Scientific and Technical Research for Defense (AR)
- Instituto Nacional de Salud (PE)
- Hospital Metropolitano (EC)
- Instituto Nacional de Salud (CO)
- Institut de Recherche pour le Développement (FR)
- Fundação Oswaldo Cruz (BR)
- Universidad de Carabobo (VE)
- Universidad Nacional de Asunción (PY)
- University of Guyana (GY)
Publication Details
- Journal
- The Lancet Regional Health - Americas
- Published
- 2026-06-19
- DOI
- https://doi.org/10.1016/j.lana.2026.101538
- Primary Topic
- Mosquito-borne diseases and control
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Institut de Recherche pour le Développement
- Centers for Disease Control and Prevention