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New Hampshire - Avian influenza in wild birds 2025

Pathfinder

Pathfinder

Editor, Senior Moderator
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: March 04, 2025
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification​
New HampshireGrafton02/19/202502/27/2025EA H5MallardWild bird
New HampshireGrafton02/19/202502/27/2025EA H5MallardWild bird
New HampshireGrafton02/14/202502/27/2025EA H5MallardWild bird
New HampshireStrafford02/13/202502/27/2025EA H5Red-tailed hawkWild bird
New HampshireBelknap02/13/202502/24/2025EA H5Canada gooseWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
​
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireBelknap02/11/202502/24/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
​
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA/AM H5N1Mallard/Black duck hybridWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
​
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA H5MallardWild bird
New HampshireRockingham02/07/202502/18/2025EA/AM H5N1MallardWild bird
New HampshireMerrimack01/17/202501/31/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/31/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/31/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/31/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/31/2025EA H5MallardWild bird
​
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
​
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
​
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
New HampshireMerrimack01/17/202501/30/2025EA H5MallardWild bird
​
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: August 13, 2025
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification
​
New HampshireRockingham3/19/20258/1/2025EA H5Gull (unidentified)Wild bird
New HampshireRockingham7/12/20258/1/2025EA H5Common eiderWild bird
New HampshireStrafford7/9/20258/1/2025EA H5Common eiderWild bird
New HampshireRockingham6/26/20258/1/2025EA H5Herring gullWild bird
New HampshireRockingham2/19/20258/1/2025EA H5Red-breasted merganserWild bird
​
...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
New HampshireHillsborough9/16/20259/25/2025EA H5MallardWild birdLive bird
New HampshireHillsborough9/16/20259/25/2025EA H5Mallard/Black duck hybridWild birdLive bird
New HampshireHillsborough9/16/20259/25/2025EA H5MallardWild birdLive bird
New HampshireHillsborough9/16/20259/25/2025EA H5MallardWild birdLive bird
New HampshireHillsborough9/16/20259/25/2025EA H5MallardWild birdLive bird
New HampshireGrafton9/3/20259/12/2025EA/AM H5N1MallardWild birdLive bird
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: October 14, 2025
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
New HampshireHillsborough10/1/202510/8/2025EA H5MallardWild birdLive bird
​
...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
​
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: November 18, 2025
...​
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
New HampshireHillsborough9/16/202511/10/2025EA/AM H5N1MallardWild birdLive bird
New HampshireHillsborough9/16/202511/10/2025EA/AM H5N1MallardWild birdLive bird
...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: February 11, 2026
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method​
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5Mallard/Black duck hybridWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5Mallard/Black duck hybridWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
​
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireRockingham1/30/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
​
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5Mallard/Black duck hybridWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
​
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5American black duckWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
​
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5American black duckWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
​
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
New HampshireBelknap1/29/20262/9/2026EA H5MallardWild birdLive bird
​...
https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds

​​
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds

Last Modified: February 24, 2026
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
​​
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireBelknap2/5/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireBelknap2/5/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
​
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
New HampshireStrafford2/3/20262/17/2026EA H5MallardWild bird
​...

https://www.aphis.usda.gov/livestoc...an/avian-influenza/hpai-detections/wild-birds
 
Detections of Highly Pathogenic Avian Influenza in Wild Birds
...
State County Collection Date Date Detected HPAI Strain Bird Species WOAH Classification Sampling Method
​
New HampshireBelknap1/29/20262/27/2026EA H5American black duckWild birdLive bird
New HampshireGrafton2/11/20262/19/2026EA H5MallardWild birdLive bird
New HampshireGrafton2/10/20262/19/2026EA H5MallardWild birdLive bird
New HampshireGrafton2/10/20262/19/2026EA H5MallardWild birdLive bird
​...

https://www.aphis.usda.gov/livestoc...n-influenza/hpai-detections/wild-birds?page=1
 
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