Avian Influenza
G.h Code: GHL2024.D11.1E31
A line list outbreak identifier is of the following form:GHLYYYY.D11.CODE, comprising of these parts:
GHL: indicating this is a Global.health line list
YYYY: Year the outbreak began
D11: indicating that we are using ICD-11 codes for the rest of the identifier
ICD-11 CODE: Four letter alphanumeric code representing the pathogen. For a full list see: https://icd.who.int
Affected Area: United States of America
Affected Area provides the spatial reach of the outbreak.
Timespan: February 2024 - July 2025 (last human case February 2025)
Timespan provides the start and end date for data related to this outbreak.
Status: Inactive
Status refers to the status for data curation as Inactive or Active. Active outbreaks are currently being updated. Inactive outbreaks are no longer being updated.The repository contains dated records of curated avian influenza cases from the 2024-2025 outbreak in the United States of America (U.S.).
In March 2024, avian influenza was detected in U.S. dairy cattle, triggering a nationwide outbreak that spread across commercial cattle and poultry and spilled over into humans, resulting in 70 confirmed human cases and widespread animal infections. These data are available through our interactive One Health outbreak map. In partnership with ThinkGlobalHealth, we also compiled 840 timeline entries—spanning human, animal, wastewater, policy, research, and genomic data—into a publicly accessible chronology, which was featured in The Atlantic.
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