Yucatán leads the nation in seasonal influenza cases, accounting for nearly 30% of confirmed infections.
So far in the 2025-2026 flu season, 952 cases of influenza have been confirmed nationwide, along with five deaths, one of which occurred in the state of Yucatán.
Infections are concentrated in the following age groups: 5 to 9 years (10.2%), 1 to 4 years (7.6%), 25 to 29 years (6.9%), 10 to 14 years (6.8%), and 35 to 39 years (6.5%).
This information comes from the epidemiological week 49 report (November 30 to December 6) issued by the Federal Ministry of Health.
As of December 8, 2025, Yucatán has the highest number of confirmed influenza cases, accounting for 29.7% of infections nationwide, followed by Mexico City with 19.6%, the State of Mexico with 6.3%, Quintana Roo with 5.1%, and Guerrero with 4.6%.
To date, five deaths have been reported during the 2025 seasonal influenza season: two in Tabasco, one in Guerrero, one in Quintana Roo, and one in Yucatán.
There are 283 confirmed cases of seasonal influenza in Yucatán as of week 49.
According to the federal Ministry of Health, 93.9% of influenza cases in the Yucatán Peninsula are of type A (H1N1), which is also the predominant variant nationwide.
The full report from the federal agency follows:
In an interview with the newspaper, Dr. José Roberto Herrera Gamboa, a physician at the Autonomous University of Yucatán (UADY), warned that it is quite likely that the H3N2 influenza variant will reach Yucatán.
This variant, commonly referred to as “super flu,” is already present in countries in Europe, Asia, and Oceania, as well as North America.
Due to the global circulation of the virus and the constant movement of people and tourists, it is possible that it will reach the Peninsula. Currently, there are no confirmed cases of H3N2 in the region.
“This is a variant of the H3N2 influenza A virus that has proven to be more contagious and, in some cases, more severe than common seasonal flu strains.
Although H3N2 is already known, this year it has undergone mutations that allow it to evade the body’s defenses more effectively, making it more susceptible to complications in at-risk groups such as older adults, young children, and people with chronic illnesses.”
While no cases have been detected on the Yucatán Peninsula, the Federal Ministry of Health has already confirmed one case in the country.
During his press conference, Governor Joaquín Díaz Mena urged people to get vaccinated and remain calm regarding the H3N2 influenza variant.
“We are not facing a situation similar to COVID-19. Only one case of this variant has been registered throughout Mexico, and according to health authorities, it does not currently represent a public health problem.”
From the Government Palace, the state governor said that the goal is to administer 676,400 doses of the influenza vaccine during this winter season.
Source: yucatan
