Massachusetts: 2024-2026 Avian flu in wild birds

[Pathfinder]

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: February 11, 2026
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird

Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Worcester	1/21/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Middlesex	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Norfolk	1/20/2026	2/5/2026	EA H5	Mallard	Wild bird	Live bird

Massachusetts	Middlesex	1/8/2026	2/3/2026	EA H5	Canada goose	Wild bird	Morbidity/Mortality
Massachusetts	Essex	12/19/2025	2/3/2026	EA H5	Canada goose	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/4/2026	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/4/2026	2/3/2026	EA H5	Sanderling	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/12/2026	2/3/2026	EA H5	American crow	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/10/2026	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/5/2026	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/4/2026	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/30/2025	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/29/2025	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality

Massachusetts	Barnstable	12/20/2025	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/27/2025	2/3/2026	EA H5	Great black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/1/2025	2/3/2026	EA H5	American crow	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/15/2025	2/3/2026	EA H5	Herring gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/3/2025	2/3/2026	EA H5	Lesser black-backed gull	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	12/24/2025	2/3/2026	EA H5	Snowy owl	Wild bird	Morbidity/Mortality
Massachusetts	Essex	1/19/2026	2/3/2026	EA H5	Canada goose	Wild bird	Morbidity/Mortality
Massachusetts	Middlesex	1/8/2026	2/3/2026	EA H5	Canada goose	Wild bird	Morbidity/Mortality
Massachusetts	Bristol	1/7/2026	2/3/2026	EA H5	Mallard	Wild bird	Morbidity/Mortality
Massachusetts	Worcester	1/2/2026	2/3/2026	EA H5	Canada goose	Wild bird	Morbidity/Mortality

Massachusetts	Middlesex	12/27/2025	2/3/2026	EA H5	Mallard	Wild bird	Morbidity/Mortality
Massachusetts	Barnstable	1/10/2026	2/2/2026	EA H5	Ring-necked duck	Wild bird	Hunter harvest

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https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds

[Commonground]

February 25, 2026
Avian flu confirmed in Boston-area birds, public health officials say

BOSTON — Highly pathogenic avian flu, or bird flu, has been confirmed in birds in Boston area parks
public health officials said Wednesday.

“Risk of human infection is currently low,” Boston Public Health Commission officials said in a post on X, formerly known as Twitter.

Avian flu was confirmed in the Emerald Necklace, a park system in Boston and Brookline that is over seven miles long and covers 1,100 acres, officials said.
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https://www.boston25news.com/news/local/avian-flu-confirmed-boston-area-birds-public-health-officials-say/BJECFFGFK5HOPPCP3W6S6UOWMA/?utm_campaign=trueanthem&utm_medium=trueanthem&utm _source=facebook&fbclid=IwY2xjawQNFitleHRuA2FlbQIx MQBicmlkETJ5blUxQ1VaR2dzYUJObjd3c3J0YwZhcHBfaWQQMj IyMDM5MTc4ODIwMDg5MgABHnQMI7ZgTym94UmC93VjjNC8uVex GWr_GMSc7ec_ia7l2rAkrn2Jm9VlEopq_aem_9guMeSq_s2CKi a2AOHuQ2g

[Pathfinder]

Related to the post above:

Boston Public Health Commission's Post

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Boston Public Health Commission

16h ·

Highly pathogenic avian flu, or bird flu, has been confirmed in the Emerald Necklace. Risk of human infection is currently low.

As always, please do not feed, touch, or remove birds from Boston parks.

Report sick, injured, or dead birds to mass.gov/reportbirds or call 311.

https://www.facebook.com/HealthyBoston/posts/highly-pathogenic-avian-flu-or-bird-flu-has-been-confirmed-in-the-emerald-neckla/1363662669123342/

[Pathfinder]

Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: February 24, 2026
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification

Massachusetts

Hampden

1/29/2026

2/11/2026

EA H5

American black duck

Wild bird

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https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds

[Commonground]

‘Keep their pets indoors’: Brookline town officials offer guidance on avian flu in local wildlife

February 27, 2026

BROOKLINE, Mass. — Local pet owners are being urged to keep their pets indoors after Highly Pathogenic Avian Influenza H5N1 has been confirmed in wild birds along the Riverway and Olmsted Parks in Brookline and Boston.

Cats are highly susceptible to Highly Pathogenic Avian Influenza and may die from infection, Brookline town officials said in a statement on Friday. Cat owners in affected areas are advised to keep their pets indoors to prevent exposure.

Dogs and other pets should remain leashed and kept away from wildlife.

Brookline employees are working with Boston Park Rangers “to maintain consistent safety and response protocols,” Brookline public health officials and the town’s public works department said in a statement.

“Park Rangers are patrolling affected areas daily, removing sick or deceased animals, and responding to reports from the public,” town officials said.

continued: https://www.boston25news.com/news/lo...AEUI6F2GCRKWU/

[Pathfinder]

Detections of Highly Pathogenic Avian Influenza in Wild Birds
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State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method

Massachusetts	Barnstable	2/18/2026	2/26/2026	EA H5	Mallard	Wild bird	Live bird
Massachusetts	Barnstable	2/18/2026	2/26/2026	EA H5	Mallard	Wild bird	Live bird

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https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds?page=1