Date: Fri 7 Feb 2025
Source: PAHO/WHO Epidemiological Alert [edited] https://www.paho.org/en/documents/epidemiological-alert-risk-dengue-outbreaks-due-increased-circulation-denv-3-americas
The occurrence and magnitude of dengue outbreaks are usually associated with the introduction or increase in circulation of a serotype other than the one that previously predominated in an affected region. Given the risk of an increase in the circulation of DENV3 in the southern hemisphere of the Americas Region during the peak dengue season, the Pan American Health Organization / World Health Organization (PAHO/WHO) urges Member States to prepare for a possible increase in cases and ensure early diagnosis and timely care dengue and other arbovirus cases, in order to prevent severe cases and deaths associated with these diseases.
Summary of the situation in the Americas Region
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In 2024, there was a historic increase in dengue cases in the Americas Region with 13 027 747 cases reported by 50 countries and territories. Of this total, 6 906 396 were laboratory confirmed, 22 684 were characterized as severe dengue (0.17%), and 8186 were fatal cases (case fatality rate 0.063%). The countries that reported the highest proportion of cases were Brazil with 10 232 872 cases, Argentina with 581 559 cases, Mexico with 558 846 cases, Colombia with 320 982 cases, and Paraguay with 295 785 cases (1). Note: This detailed update provides country by country updates on the 2024 and present situation. The risk for further travel related cases persists.