Dengue outbreaks surge across Latin America and Mexico

dengue fever Aedes aegypti El Niño public health crisis vaccination campaign

Multiple countries in Latin America and Mexico are facing significant dengue fever outbreaks, driven by seasonal rains and the El Niño phenomenon.

In Peru, the Ministry of Health has reported over 71,000 cases and 75 deaths in 2026. The Piura region is the most affected with 13,025 cases. To combat the spread, the government is acquiring one million additional vaccines, prioritizing the 10 to 20 age group, and preparing field hospitals. The dengue serotype 3 is currently the predominant strain circulating.

Mexico is also experiencing high infection rates, with the state of Sonora emerging as a national epicenter, reporting 1,862 confirmed cases and five deaths. In Quintana Roo, 44 new cases were confirmed in a single week, bringing the yearly total to 404.

In Panama, cases have exceeded 10,400 for the year, with 20 deaths reported. Argentina has notified two imported cases during epidemiological week 40, while the country continues to monitor potential transmission following previous outbreaks in the northern regions.

Entities

César Munayco · Luis Dyer · Mexico · Ministry of Health · Ministry of Health (Minsa) · National Center for Epidemiology, Prevention, and Disease Control · Peru · Piura · Sonora

Claims

What the coverage asserts, and how many sources carry each claim.

[● 3 SOURCES] The Ministry of Health is acquiring one million additional dengue vaccines. diariolaopinion.pe
[● 2 SOURCES] Argentina reported two new imported dengue cases in epidemiological week 40. mediosrioja.com.ar · noticiasargentinas.com
[● 2 SOURCES] Dengue vaccination requires two doses with a three-month interval.
[● 3 SOURCES] El Niño phenomenon is accelerating dengue transmission due to heat and rain. diariolaopinion.pe
[● 2 SOURCES] Vaccination is being prioritized for the 10 to 20 age group.
[DISPUTED] Piura is the region with the highest number of dengue cases in Peru, totaling 13,025. diariocorreo.pe
[● 2 SOURCES] The dengue serotype 3 is predominantly circulating in Peru.
[DISPUTED] Peru has recorded over 71,000 dengue cases and 75 deaths. diariocorreo.pe