Mexico - Avian flu in wild & domestic birds - 2025

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https://wahis.woah.org/#/in-review/5820

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[translated, emphasis is mine]

TENDENCIASDOMINGO, 12 DE OCTUBRE DE 2025

Tamaulipas remains on alert for avian flu; risk to the population ruled out

Health authorities maintain active surveillance despite studies ruling out human risk... The Tamaulipas Health Secretariat (SST) reported that it maintains a preventive alert for avian flu, after the presence of the virus was confirmed in a migratory bird in Matamoros and in nearby poultry.

Although the tests conducted currently rule out a risk to the population, authorities maintain active surveillance throughout the state.

Authorities install sanitary cordon to prevent the spread of the virus

The head of the agency, Vicente Joel Hernández Navarro, explained that the detection arose after the discovery of a dead migratory bird that tested positive for avian flu, which prompted the immediate installation of a sanitary cordon.

"The first situation that arose was a migratory bird that died. It was tested and tested positive. Two weeks later, four poultry birds that were infected with the virus died," he said.

He added that in response to this situation, a group of specialized teams monitored a three-kilometer radius to prevent further cases.

"We have no human cases, that is, there is no health alert here in this regard, but there is very intensive work to prevent cases from occurring."

continued: https://oem.com.mx/elsoldetampico/te...iJS_hTEBCIxa-A

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[Translated. Emphasis is mine. This article is dated September 23, 2025, but mentions Tamaulipas as does the above article]

September 23, 2025
Avian flu symptoms detected in person who handled infected bird at Bagdad Beach; area urged not to visit

Six people remain under medical observation, and teams are searching nearby communities for possible infections. Health authorities in Tamaulipas are investigating a possible human case of avian flu after a person showed symptoms after handling an infected bird in the Bagdad Beach area of Matamoros. The public was urged not to visit the site, as it is considered a risk point.

State epidemiologist Sergio Uriegas Camargo reported that an individual with mild symptoms is being monitored and has already had samples taken to rule out or confirm infection.

Suspected cases are being monitored in Tamaulipas through testing

"Avian influenza in humans is generally severe, so it's highly likely that it's another virus. However, anyone who shows symptoms and has had contact with sick or dead birds will be tested," he stated.

Yesterday, the Matamoros Health Authority confirmed the presence of avian influenza in a dead seagull found in the coastal area bordering Texas.

As a preventative measure, authorities began monitoring people who had contact with the sick bird, given the high transmission rate of avian influenza. In addition, medical personnel were deployed to surrounding communities to search for suspected cases.

“A survey is being conducted in communities near the beach where the discovery occurred to investigate possible infections. Samples will be taken from those who have had contact with sick or dead birds, and the rest will be under observation for two weeks to detect respiratory symptoms,” explained Uriegas.

The director of the Matamoros Health Authority, Gilma Alcocer Cortés, reported that the people who handled the bird remain under observation.

For its part, the Conibio Global association announced that six people underwent tests to determine the presence or absence of the virus.

https://oem.com.mx/elsoldetampico/local/detectan-sintomas-de-gripe-aviar-en-persona-que-manipulo-ave-infectada-en-playa-bagdad-piden-no-visitar-la-zona-25911341

[sharon sanders]

Please see:

Mexico - PAHO: Human H5N1 case - September 30, 2025

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In Post #1 it was listed under H5N1. And it also detected H5N2. From Post 1:
click on image



Avian flu confirmed in fighting birds in Mexico
October 2, 2025

Excerpt:

WOAH listed these two flock infections in the same report as other cases of H5N1 HPAI, but it also reported that sequencing also detected genes corresponding to serotype H5N2.

...https://www.wattagnet.com/poultry-me...irds-in-mexico

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translated
23 de septiembre de 2025 (note date)

H5 avian influenza outbreak confirmed in Playa Bagdad, Matamoros; death toll rises to 400

Excerpt:

The Conibio Global Foundation also reported that a volunteer supporting environmental monitoring efforts is under medical observation after developing fever, flu-like symptoms, and headache following direct contact with sick birds on the nesting island.

Although the case has not yet been confirmed, health authorities conducted laboratory tests similar to those used during the COVID-19 pandemic to rule out or confirm infection.

Epidemiologist Uriegas emphasized that early detection and interinstitutional coordination are key to containing risks:

“The investigation will remain active; if a suspected case appears in humans, a sample will be taken immediately to confirm or rule it out in a laboratory.” ...Meanwhile, health authorities are maintaining an operation to detect possible cases, conducting house-to-house visits in communities near Playa Bagdad and monitoring health units to identify suspected cases in humans.

... https://www.proceso.com.mx/nacional/...as-359319.html

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translated

Health Secretary dismisses warning of bird flu cases in Matamoros

Following confirmation of cases of avian flu in the municipality of Matamoros, Tamaulipas Health Secretary Vicente Joel Hernández Navarro assured that the situation remains under control and that, for the moment, there is no health alert crisis in the state.
18 octubre, 2025

The official explained that the Ministry of Health, in coordination with animal health authorities, has implemented health fences in the areas where cases were detected, with the goal of preventing the spread of the virus among domestic birds.

"We are creating health fences and monitoring each of the families that have domestic chickens, because avian flu comes with migratory birds. This is helping us stay on top of the situation in all jurisdictions of the state," said Hernández Navarro.

The Health Secretary emphasized that, although the cases have been concentrated in Matamoros, surveillance has been strengthened in all health jurisdictions in Tamaulipas, especially those located along migratory bird routes.

He also announced that a meeting will be held with jurisdictional leaders to review prevention and response measures for possible outbreaks.

"It's not an alert, but the governor is asking us to pay special attention," he stated.

https://horacero.com.mx/tamaulipas/descarta-secretario-de-salud-alerta-por-casos-de-gripe-aviar-en-matamoros