{"id":43399,"date":"2024-06-18T17:59:48","date_gmt":"2024-06-18T21:59:48","guid":{"rendered":"https:\/\/bnonews.com\/?page_id=43399"},"modified":"2026-04-21T22:41:22","modified_gmt":"2026-04-22T02:41:22","slug":"human-cases-of-h5n1-bird-flu","status":"publish","type":"page","link":"https:\/\/bnonews.com\/index.php\/human-cases-of-h5n1-bird-flu\/","title":{"rendered":"Table: Human cases of H5N1 bird flu"},"content":{"rendered":"\n

Last updated: April 21, 2026<\/em><\/p>\n\n\n\n

On this page you’ll find detailed information about each human case of H5N1 bird flu since 2020, when a new variant (clade 2.3.4.4b) emerged in birds and spread around the world, eventually reaching every continent except Oceania. This page is updated regularly and as soon as possible when a human case is reported.<\/p>\n\n\n\n

The current variant of concern has affected a growing number of mammals since it was first detected. The first human case involving this clade was reported in the UK in January 2022. However, older clades are still capable of causing human infections, particularly in countries like Cambodia, where clade 2.3.2.1c has circulated for years. A more recently identified reassortant, classified as 2.3.2.1e, has also been detected.<\/p>\n\n\n

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\"\"<\/figure><\/div>\n\n\n

Summary (1997-present)<\/h2>\n\n\n\n
<\/td>Cases<\/strong><\/td>Deaths<\/strong><\/td>CFR<\/strong><\/td><\/tr>
New variant<\/td>92<\/td>3<\/td>3%<\/td><\/tr>
All variants<\/td>1,023<\/td>482<\/td>47%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

U.S. cases since 2024<\/h2>\n\n\n\n
<\/td>Cases<\/strong><\/td>Unknown source<\/strong><\/td><\/tr>
California<\/strong><\/td>39<\/td>2<\/td><\/tr>
Washington<\/strong><\/td>14<\/td>0<\/td><\/tr>
Colorado<\/strong><\/td>10<\/td>0<\/td><\/tr>
Arizona<\/strong><\/td>2<\/td>0<\/td><\/tr>
Michigan<\/strong><\/td>2<\/td>0<\/td><\/tr>
Delaware<\/strong><\/td>1<\/td>1<\/td><\/tr>
Iowa<\/strong><\/td>1<\/td>0<\/td><\/tr>
Louisiana<\/strong><\/td>1<\/td>0<\/td><\/tr>
Missouri<\/strong><\/td>1<\/td>1<\/td><\/tr>
Nevada<\/strong><\/td>1<\/td>0<\/td><\/tr>
Ohio<\/strong><\/td>1<\/td>0<\/td><\/tr>
Oregon<\/strong><\/td>1<\/td>0<\/td><\/tr>
Texas<\/strong><\/td>1<\/td>0<\/td><\/tr>
Wisconsin<\/strong><\/td>1<\/td>0<\/td><\/tr>
Wyoming<\/strong><\/td>1<\/td>0<\/td><\/tr>
Total<\/strong><\/td>77<\/strong><\/td>4<\/strong><\/td><\/tr><\/tbody><\/table>
Note: This list does not include a human case of H5N5 bird flu in Washington state in November 2025.<\/figcaption><\/figure>\n\n\n\n

Help us continue: Support our work by making a contribution on PayPal<\/a>, BuyMeACoffee<\/a>, Patreon<\/a> or Ko-Fi<\/a>.<\/strong> <\/p>\n\n\n\n

Clade 2.3.4.4b (new variant)<\/h2>\n\n\n\n

If you’re using a mobile device, swipe right to see all columns.<\/p>\n\n\n\n

Reported<\/strong><\/td>Location<\/strong><\/td>Patient<\/strong><\/td>Symptoms<\/strong><\/td>Outcome<\/strong><\/td>Poultry\/
cattle link<\/strong><\/td>		Source<\/strong><\/td><\/tr>
2025-04<\/td>Mexico<\/td>3\/F<\/td>Severe<\/td>Died<\/td>No<\/td>Link<\/a><\/td><\/tr>
2025-02<\/td>Wyoming<\/td>Adult\/F<\/td>Severe<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2025-02<\/td>Ohio<\/td>Adult\/M<\/td>Severe<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2025-02<\/td>Nevada<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2025-01<\/td>UK<\/td>N\/A<\/td>Mild<\/td>N\/A<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2025-01<\/td>California<\/td>Child<\/td>Mild<\/td>Recovered<\/td>No<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Iowa<\/td>Adult<\/td>Mild<\/td>N\/A<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Wisconsin<\/td>Adult\/F<\/td>Mild<\/td>N\/A<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Delaware<\/td>N\/A<\/td>N\/A<\/td>N\/A<\/td>No<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Louisiana<\/td>N\/A<\/td>Severe<\/td>Died<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Arizona<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>Arizona<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-12<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Child<\/td>Mild<\/td>Recovered<\/td>No<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Oregon<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Canada<\/td>13\/F<\/td>Severe<\/td>N\/A<\/td>No<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-11<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>Washington<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-10<\/td>California<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-09<\/td>Missouri<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>No<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-07<\/td>Colorado<\/td>Adult\/M<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-05<\/td>Michigan<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-05<\/td>Michigan<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2024-04<\/td>Texas<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2023-07<\/td>UK<\/td>N\/A<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2023-07<\/td>UK<\/td>N\/A<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2023-05<\/td>UK<\/td>N\/A<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2023-05<\/td>UK<\/td>N\/A<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2023-03<\/td>Chile<\/td>53\/M<\/td>Severe<\/td>Recovered<\/td>No<\/td>Link<\/a><\/td><\/tr>
2023-03<\/td>China<\/td>52\/F<\/td>Severe<\/td>Recovered<\/td>Yes<\/td><\/td><\/tr>
2023-01<\/td>Ecuador<\/td>9\/F<\/td>Severe<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2022-10<\/td>Spain<\/td>19\/M<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2022-10<\/td>Spain<\/td>27\/M<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2022-09<\/td>China<\/td>38\/F<\/td>Severe<\/td>Died<\/td>Yes<\/td><\/td><\/tr>
2022-04<\/td>Colorado<\/td>Adult<\/td>Mild<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr>
2022-01<\/td>UK<\/td>80s<\/td>None<\/td>Recovered<\/td>Yes<\/td>Link<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

NOTES:<\/p>\n\n\n\n