H5N1 Avian Flu Spreads Globally: Unprecedented Outbreaks in Birds, Mammals, and Emerging Pandemic Concerns
Published: December 24, 2025
Duration: 4:03
This is “H5N1 Global Scan: Avian Flu Worldwide.”
I’m your host, and today we’re taking a three‑minute tour of how H5N1 avian influenza is reshaping animal health, trade, and pandemic preparedness around the globe.
Let’s start with the big picture. The World Health Organization says that since 2003, nearly a thousand human H5N1 infections have been reported from more than 20 countries, with about half of patients dying. The Pan American Health Organization reports that the newer H5N1 clade 2.3.4.4b has driven unprecedented bird die‑offs since 2020, and an expanding list of mammal...
I’m your host, and today we’re taking a three‑minute tour of how H5N1 avian influenza is reshaping animal health, trade, and pandemic preparedness around the globe.
Let’s start with the big picture. The World Health Organization says that since 2003, nearly a thousand human H5N1 infections have been reported from more than 20 countries, with about half of patients dying. The Pan American Health Organization reports that the newer H5N1 clade 2.3.4.4b has driven unprecedented bird die‑offs since 2020, and an expanding list of mammal...