Avian influenza (H5N1) official notices
Updated
animal
What to know right now
- CDC summarizes current bird flu situation updates for people: https://www.cdc.gov/bird-flu/
- USDA APHIS publishes livestock and poultry avian influenza detections: https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza
- WHO tracks influenza at the human-animal interface: https://www.who.int/teams/global-influenza-programme/avian-influenza
- Rows on this page are dated official notices we ingested. They do not add up to a comprehensive H5N1 case count.
Summaries follow official agencies (WHO, CDC, FDA, ECDC, state health departments). This is not medical advice.
Source-backed reference: Bird flu (avian influenza)
Plain-English overview
Avian influenza viruses circulate in wild birds and sometimes affect poultry operations. Human cases are rare but agencies trace exposures when they occur.
What official signals usually mean here
Signals often come from agriculture or animal-health bulletins plus CDC/WHO human updates when a spillover case is confirmed.
How OutbreakThreat tracks it
We keep the publisher link next to each notice so farms, schools, and travelers can read the same restrictions and timelines the state posted.
Official references
Below, “Latest signals” pulls from our index only when a publisher URL is attached. Open each alert for the full notice. How we label sources.
Current outbreak signals
Each notice shows the publisher's event date and source. Geography is whatever that notice stated. Counts on this page are the number of ingested notices, not national case totals. Map: filtered map.
View this alert on the outbreak map
Use the OutbreakThreat map to explore related disease signals, official sources, and nearby alerts.
Open outbreak map- Why Bird Flu Alerts Matter Beyond Farms - Bird flu (avian influenza) - U.S. CDC - event 2026-06-27
- Avian Influenza A(H9N2) - Italy - Bird flu (avian influenza) - World Health Organization - event 2026-04-10
- Avian Influenza A(H5N5)- United States of America - Bird flu (avian influenza) - World Health Organization - event 2025-12-05
- Avian Influenza A(H5N1) - Cambodia - Bird flu (avian influenza) - World Health Organization - event 2025-07-05
- Avian Influenza A(H5N1) - Mexico - Bird flu (avian influenza) - World Health Organization - event 2025-04-17
- Avian Influenza A(H9N2) - Bird flu (avian influenza) - World Health Organization - event 2024-09-20
- Avian Influenza A(H5N1)- Cambodia - Bird flu (avian influenza) - World Health Organization - event 2024-09-02
- Human infection caused by avian Influenza A(H5N2)-Mexico - Bird flu (avian influenza) - World Health Organization - event 2024-06-14
- Avian Influenza A (H9N2)- India - Bird flu (avian influenza) - World Health Organization - event 2024-06-11
- Avian Influenza A (H5N1) - Australia - Bird flu (avian influenza) - World Health Organization - event 2024-06-07
- Human infection caused by avian Influenza A(H5N2)- Mexico - Bird flu (avian influenza) - World Health Organization - event 2024-06-05
- Avian Influenza A(H9N2)- Viet Nam - Bird flu (avian influenza) - World Health Organization - event 2024-04-19
- Avian Influenza A(H5N1) - United States of America - Bird flu (avian influenza) - World Health Organization - event 2024-04-09
- Avian Influenza A(H5N1) - Viet Nam - Bird flu (avian influenza) - World Health Organization - event 2024-04-02
What it is
Animal and wildlife health signals can precede human cases for some zoonotic diseases; agencies track spillover risk.
Symptoms (general)
Human symptoms depend on the disease and are described on official agency pages linked from each signal.
How it spreads
Transmission routes vary and may include animal contact, vectors, or environmental exposure.
Prevention (general)
Follow guidance from agriculture, wildlife, and public health agencies; avoid contact with sick wildlife.
Related reports
Related locations
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Related disease alerts
Browse source-linked notices on the alerts index filtered for Bird flu (avian influenza).