H5N1 (Avian Influenza)

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Discover comprehensive information and resources on HPAI H5N1 (Avian Influenza), including updates, situational reports, news, and published research. Explore this page to stay informed about the latest developments and insights HPAI H5N1.

About HPAI H5N1

According to the Centers for Disease Control and Prevention (CDC), avian influenza, commonly referred to as bird flu, is caused by infection with avian influenza Type A viruses. These viruses are naturally found in wild aquatic birds worldwide and can infect domestic poultry, as well as other bird and animal species. While bird flu viruses typically do not infect humans, sporadic human infections have been reported.

Currently, the Highly Pathogenic Avian Influenza (HPAI) H5N1 strain is spreading globally, affecting wild birds and domestic poultry alike. Additionally, the virus has been identified in mammals, including dairy cows, foxes, mink, skunks, bears, sea lions, otters, and even domestic cats and dogs.

Furthermore, the CDC indicates that the widespread presence of A(H5N1) bird flu viruses among wild birds, poultry, and some mammals—including cows—creates additional exposure opportunities for humans. Consequently, an increase in sporadic human infections may occur due to exposure to birds, cattle, and other infected animals.

In July 2025, the CDC announced it had ended its emergency response to the H5N1 avian flu.

Resources

Updates & Situational Reports

Unofficial HPAI H5N1 Map

Data was sourced and imported from FAO EMPRES, USDA APHIS, WAHIS, and open source news reports beginning in late 2022 to current.

Click here to view the map

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Region 7 Infectious Disease Briefings

The GCHS, in collaboration with the Region VII Disaster Health Response Ecosystem (R7DHRE) conducts biweekly meetings with local and state public health and healthcare representatives. These meetings focus on reviewing and discussing recent developments related to current infectious disease challenges. Dr. James V. Lawler, MD, MPH, FIDSA, presents comprehensive updates on data and advancements at local, state, national, and international levels. Additionally, regional experts offer insights into current outbreaks and clinical situations within Region 7. Register here.

Recent Recordings | Archived Recordings

H5N1 (Avian Influenza)

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About HPAI H5N1

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Data was sourced and imported from FAO EMPRES, USDA APHIS, WAHIS, and open source news reports beginning in late 2022 to current.

News

Bird Flu on Dairy Farms May Be Airborne After All

Tracking HPAIV H5 through a geographic survey of Antarctic seabird populations

Cambodia reports 14th human H5N1 bird flu infection in 2025

The Invisible Toll of Bird Flu on Wildlife

This is How We Fight Bird Flu If H5N1 Becomes the Next Human Pandemic

Cambodia reports 13th human case of H5N1 bird flu this year

Is Bird Flu Gone for Good?

The impact of highly pathogenic avian influenza H5N1 virus infection on dairy cows

‘Milk-stealing’ calves spread deadly bird flu virus among US cows, China study reveals

Bangladesh and India alert WHO about new H5N1 infections

Archived News

2024 H5N1 News

2025 H5N1 News