Highly pathogenic avian influenza H5N1 has caused 71 confirmed human cases across 13 US states since 2024, with ongoing exposure through dairy farms and poultry operations. As of June 2026, cases have been confirmed in California, Colorado, Iowa, Louisiana, Michigan, Missouri, Nevada, Ohio, Oregon, Texas, Washington, Wisconsin, and Wyoming. Three cases involved unknown exposure sources. Two deaths have occurred. CDC considers current risk to the general public as low, but monitors closely for signs of person-to-person transmission.
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H5N1 was first identified in humans in Hong Kong in 1997 during an outbreak linked to live poultry markets. Since 2003, it has caused numerous outbreaks in bird populations across Asia, Africa, and parts of Europe, leading to sporadic but often severe human infections and significant concerns for pandemic potential.
Avian Influenza H5N1 primarily spreads to humans through direct, prolonged contact with infected poultry (live or dead), their secretions (saliva, feces), or contaminated environments (e.g., surfaces in live bird markets). Human-to-human transmission is rare and has not been sustained, but close contact with an infected person might pose a limited risk.
PerÃodo de Contagio: Varies by disease
Información del departamento de salud local y orientación de prevención especÃfica del estado
Nuestra vigilancia impulsada por IA monitorea continuamente la actividad de Avian Influenza H5N1 (Bird Flu) en todo Colorado. Rastreamos datos de departamentos de salud estatales, hospitales locales, informes del CDC y más de 50 fuentes de salud globales para proporcionar advertencia temprana de amenazas emergentes.
Reciba notificaciones instantáneas cuando la actividad de Avian Influenza H5N1 (Bird Flu) aumenta en Colorado o en su condado especÃfico.
Para alertas oficiales de salud del estado, ubicaciones de vacunación y orientación de salud pública especÃfica de Colorado, visite el sitio web del departamento de salud de su estado.
Ya sea que viva en Colorado or are traveling there, knowing the symptoms, timeline, and when to seek care helps you act quickly if exposure occurs.
Seek care if you experience severe dehydration, bloody stools, high fever, or symptoms lasting more than 3 days. Children under 5, adults over 65, and immunocompromised individuals should seek care earlier.
SÃntomas de emergencia: Severe dehydration, inability to keep fluids down for 12 or more hours, or neurological symptoms require emergency care.
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Información confiable de las principales organizaciones de salud
Orientación oficial de los Centros para el Control y la Prevención de Enfermedades de EE. UU.
Ver Recursos del CDC →Vigilancia global de enfermedades y directrices de la Organización Mundial de la Salud
Ver Recursos de la OMS →Últimas investigaciones revisadas por pares y estudios clÃnicos
Ver Investigación →La información sobre enfermedades en Virus Watcher es revisada por nuestro Epidemiólogo Jefe, ex analista principal del CDC para el pronóstico FluSight. Los datos de brotes se agregan de fuentes verificadas incluyendo BEACON, ProMED, OMS, CDC y más de 50 agencias nacionales de salud. Esta información es con fines educativos y no debe reemplazar el asesoramiento médico profesional.
Última revisión: 2026-08-08
No confirmed cases reported in Colorado yet. Here are the latest Avian Influenza H5N1 (Bird Flu) reports from our global surveillance network.
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Poultry industry waiting and watching to see if protection measures can ease A wildlife hospital has set up an off-site triage centre to assess wild birds for signs of the deadly H5 flu, in case the country sees widespread transmission of the disease. There have been no new cas…
Australia has confirmed deadly H5N1 bird flu has been found in 102 wild seabirds across five states at the time of writing, including the country's first mass death of birds. Author * Jane Younger Senior Lecturer in Southern Ocean Vertebrate Ecology, Institute for Marine and Anta…
Add Yahoo as a preferred source to see more of our stories on Google. Australia is now confronting an outbreak of a deadly bird flu strain. As of Monday, the highly pathogenic H5N1 virus had been detected in 78 wild birds across mainland Australia. Until now, there had been no ev…
South Australia may be facing Australia's first mass wildlife death event linked to H5N1 bird flu. More than 80 sick or dying greater crested terns have been found on an island off the South Australian coast. Nationally, the government says the virus can no longer be eradicated. …
CANBERRA, Aug 3 (Reuters) - Australia warned on Monday against the risk of a wider spread of H5N1 bird flu after its first mass mortality episode among seabirds killed about 50 greater crested terns off the coast south of Adelaide. However, there is no evidence yet of the virus o…
SYDNEY - Australia warned on Aug 3 against the risk of a wider spread of H5N1 bird flu after its first mass mortality episode among seabirds killed about 50 greater crested terns off the coast south of Adelaide. However, there is no evidence yet of the virus on Australia's farms,…
Add Yahoo as a preferred source to see more of our stories on Google. The spread of H5N1 birdflu is worsening. At the time of writing, Australia has 53 confirmed detections in wild seabirds across five states. In South Australia there are 39 confirmed cases, including a silver gu…
Reciba notificaciones instantáneas cuando la actividad de Avian Influenza H5N1 (Bird Flu) aumenta en Colorado o sus destinos de viaje. Rastree más de 200 enfermedades con alertas basadas en ubicación. Utilizado por sistemas de salud, servicios de emergencias médicas, escuelas y viajeros de todo el mundo.
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