H5N1 Technical Report

What to know

These technical reports are intended for scientific audiences. Additional information for scientific audiences and the general public is available on CDC’s Information on Bird Flu webpage.

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H5N1 Bird Flu Technical Reports
Technical Report: June 2024 Highly Pathogenic Avian Influenza A(H5N1) Viruses
Read the latest H5N1 technical report for information on H5N1 outbreaks globally.
Decorative: The globe above glowing signal bars with the title "H5N1 Technical Report."
Technical Report: April 2024 Highly Pathogenic Avian Influenza A(H5N1) Viruses
Report reviews outbreaks of influenza A(H5N1) viruses in animals and risk for public health.
H5N1 Bird Flu Technical Reports
Technical Report: December 2023 Highly Pathogenic Avian Influenza A(H5N1) Viruses
This report provides an update to the original report from March 17, 2023
H5N1 Bird Flu Technical Reports
Technical Report: October 2023 Highly Pathogenic Avian Influenza A(H5N1) Viruses
This report provides an update to the original report posted on March 17, 2023
H5N1 Bird Flu Technical Reports
Technical Report: September 2023 Highly Pathogenic Avian Influenza A(H5N1) Viruses
CDC is working on the situation with clade 2.3.4.4b A(H5N1) viruses in wild birds & poultry
H5N1 Bird Flu Technical Reports
Technical Report: June 2023 Highly Pathogenic Avian Influenza A(H5N1) Viruses
June 2023 CDC technical report on avian influenza A(H5N1)
H5N1 Bird Flu Technical Reports
Technical Report: March 2023 Highly Pathogenic Avian Influenza A(H5N1) Viruses
CDC is working on the situation with clade 2.3.4.4b A(H5N1) viruses in wild birds & poultry

Addendums

Human Infection with highly pathogenic avian influenza A(H5N1) virus in Chile
On March 29, 2023, Chile reported its first human infection with HPAI A(H5N1) virus.
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Content Source:
National Center for Immunization and Respiratory Diseases (NCIRD)