Shiloh
Editor, Senior Moderator
Source: https://www.paho.org/en/documents/e...fluenza-ah5n1-americas-region-15-october-2025
Epidemiological Update Avian Influenza A(H5N1) in the Americas Region - 15 October 2025
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[TD="class: views-field views-field-body"]In recent years, there has been an increase in the detection of A(H5N1) viruses in non-avian species worldwide, including terrestrial and marine mammals, both wild and domestic (companion and production). Since 2022, twenty-two countries on three continents, including the Americas, have reported outbreaks in mammals to the World Organization for Animal Health (OIE). Historically, from early 2003 to August 25, 2025, 990 human cases of avian influenza A(H5N1) were reported to the World Health Organization (WHO), including 475 deaths (48% fatality rate), in 25 countries worldwide.
Since 2022 and as of epidemiological week 41 of 2025, a total of 19 countries and territories in the Americas Region reported 5,063 outbreaks of avian influenza A(H5N1) to WOAH.
Between 2022 and 14 October 2025, a total of 76 human infections caused by avian influenza A(H5), including two deaths, have been reported in five countries in the Americas.[/TD]
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Epidemiological Update Avian Influenza A(H5N1) in the Americas Region - 15 October 2025
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[TD="class: views-field views-field-body"]In recent years, there has been an increase in the detection of A(H5N1) viruses in non-avian species worldwide, including terrestrial and marine mammals, both wild and domestic (companion and production). Since 2022, twenty-two countries on three continents, including the Americas, have reported outbreaks in mammals to the World Organization for Animal Health (OIE). Historically, from early 2003 to August 25, 2025, 990 human cases of avian influenza A(H5N1) were reported to the World Health Organization (WHO), including 475 deaths (48% fatality rate), in 25 countries worldwide.
Since 2022 and as of epidemiological week 41 of 2025, a total of 19 countries and territories in the Americas Region reported 5,063 outbreaks of avian influenza A(H5N1) to WOAH.
Between 2022 and 14 October 2025, a total of 76 human infections caused by avian influenza A(H5), including two deaths, have been reported in five countries in the Americas.[/TD]
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