The Organization highlights current boosts in dengue cases in numerous nations and the renewal of chikungunya transmission in locations where the infection had actually not distributed for a number of years, as South America approaches its peak transmission season.
Washington, D.C., October 21, 2026 (PAHO)– The Pan American Health Organization (PAHO) gotten in touch with nations in the Americas to enhance monitoring and prepare health services in reaction to current boosts in dengue observed in numerous nations and increased and restored chikungunya transmission in nations and areas where viral blood circulation had actually not been recorded for numerous years.
The call comes in the middle of the awaited increase of the El Niño phenomenon and as South America approaches the peak transmission season for these illness.
In an epidemiological upgrade released on October 20, PAHO reported that since mid-September, 1.69 million thought dengue cases had actually been reported in the Region, consisting of 3,413 extreme cases and 571 deaths.
The cumulative number of reported cases represents a 58% decline compared with the very same duration in 2025, this decrease has actually not been consistent throughout the Region: boosts have actually been observed in current weeks in nations in the Andean, Central American, and Caribbean subregions. Flow of all 4 dengue infection serotypes has actually likewise been recognized in the Americas in 2026.
PAHO likewise highlighted the chikungunya scenario, with transmission increasing in between late 2025 and 2026 and reemerging in nations and areas that had actually not recorded viral blood circulation for numerous years. Since mid-September, 213,919 believed cases had actually been reported, of which 78,481 were verified, together with 88 deaths in 20 nations in the Region.
The upgrade likewise indicates transmission in brand-new locations, break outs outside historic transmission seasons, longer transmission durations, and increased reporting of more serious medical symptoms.
Reinforcing avoidance and preparing health services
In reaction, PAHO advised nations to enhance epidemiological, virological, and entomological security, boost diagnostic capability, and make sure early detection and prompt medical management of cases. The Organization likewise advised stepping up incorporated procedures to manage Aedes mosquitoes, the primary vectors of these illness.
PAHO advises that health services prepare to react to possible boosts in cases at all levels of care, with specific focus on reinforcing main healthcare capability to acknowledge dengue indication early and avoid development to extreme illness. Medical facilities ought to likewise be prepared to handle cases with dengue indication and serious cases of these illness.
Removing mosquito reproducing websites stays an essential step to lower mosquito populations. PAHO suggests reinforcing ecological management, removing containers that gather water, and promoting the active involvement of neighborhoods, households, regional authorities, and other sectors in avoidance and control efforts.
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