US - H5N1 Avian Flu in Mammal Livestock List

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 3 , 2026 11:25 pm ET - a total of USDA confirmed + highly probable herds via states = 1,163​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 132: 131 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 31: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 14: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 10 , 2026 12:20 am ET - a total of USDA confirmed + highly probable herds via states = 1,188​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 157: 156 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 31: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 14: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 10 , 2026 12:30 pm ET - a total of USDA confirmed + highly probable herds via states = 1,193​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 162: 161 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 31: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 14: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 16 , 2026 8:15 pm ET - a total of USDA confirmed + highly probable herds via states = 1,195​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 164: 163 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 31: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 14: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/livestock/nmts[/QUOTE]

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 16 , 2026 8:15 pm ET - a total of USDA confirmed + highly probable herds via states = 1,196​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 164: 163 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 14: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 26 , 2026 12:07 am ET - a total of USDA confirmed + highly probable herds via states = 1,199​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 165: 164 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 16: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 27, 2026 11:47 am ET - a total of USDA confirmed + highly probable herds via states = 1,206​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 172: 171 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 16: all dairy herds, state link

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of June 30, 2026 2:19 am ET - a total of USDA confirmed + highly probable herds via states = 1,207​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 172: 171 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 17: 16 dairy herds & 1 "other"

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 1, 2026 3:05 pm ET - a total of USDA confirmed + highly probable herds via states = 1,209​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 172: 171 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 19: 19 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 7, 2026 8:24 am ET - a total of USDA confirmed + highly probable herds via states = 1,212​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 172: 171 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 32: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 22: 22 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 9, 2026 9:06 am ET - a total of USDA confirmed + highly probable herds via states = 1,214​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 172: 171 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 22: 22 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 14, 2026 10:10 pm ET - a total of USDA confirmed + highly probable herds via states = 1,215​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 173: 172 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 22: 22 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 16, 2026 3:29 pm ET - a total of USDA confirmed + highly probable herds via states = 1,223​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 27: 27 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 22, 2026 2:54 pm ET - a total of USDA confirmed + highly probable herds via states = 1,224​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 28: 28 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 23, 2026 6:05 pm ET - a total of USDA confirmed + highly probable herds via states = 1,221​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 173*: 172 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS (*USDA removed 3 herds from July 14 data, see above)

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 28: 28 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of July 28, 2026 10:12 pm ET - a total of USDA confirmed + highly probable herds via states = 1,224​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176*: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS (*USDA removed 3 herds from July 14 data, see above) and then added back in with a date of July 24).

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 28: 28 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of August 6, 2026 6 pm ET - a total of USDA confirmed + highly probable herds via states = 1,225​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176*: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS (*USDA removed 3 herds from July 14 data, see above) and then added back in with a date of July 24).

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 34: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 29: 29 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of August 18, 2026 , 3pm ET - a total of USDA confirmed + highly probable herds via states = 1,227​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176*: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS (*USDA removed 3 herds from July 14 data, see above) and then added back in with a date of July 24).

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 36: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 29: 29 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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

 

[sharon sanders]

As of December 13, 2024 the transparency has become clouded - there are confirmed herds with the same confirmation date being reported later on multiple days.

All state totals and the US total are the known number of herds and are a range only - not absolute certain counts.

Difference from USDA count highlighted in green.

hat tip Pathfinder, Commonground, Shiloh



Cumulative H5N1 Mammal Livestock list + National Milk Testing Strategy (NMTS), by state


As of August 18, 2026 , 3pm ET - a total of USDA confirmed + highly probable herds via states = 1,227​


Arizona = 5 dairy cattle herds, incl. 1 bulk tank test result, also listed as "affected" by NMTS

California= 822: all dairy cattle herds, also listed as "affected" by NMTS (49 herds are reinfections link link)

Colorado = 65: dairy cattle herds (one herd counted as reinfected link) and dairy bulk tank test results, also listed as "affected" by NMTS

Idaho = 176*: 175 dairy cattle herds, 1 alpaca herd, also listed as "affected" by NMTS (*USDA removed 3 herds from July 14 data, see above) and then added back in with a date of July 24).

​Iowa = 13: all dairy cattle herds

Kansas = 4​​: all dairy cattle herds

Michigan = 31: all dairy cattle herds, also listed as "affected" by NMTS

Minnesota = 11: 9 dairy cattle herds (1 is bulk milk testing), + 1 goat herd link , + in March '25 1 bulk milk (indicative of a herd) per state rpt link., also listed as "affected" by NMTS

Nebraska= 1 dairy herd

Nevada = 11 dairy herds, 4 confirmed herds with D1.1 strain (wild bird strain), includes some bulk tanks results, also listed as "affected" by NMTS

New Mexico = 9: all dairy herds

North Carolina = 1 dairy herd​
​
​Ohio = 1 dairy herd

Oklahoma = 2: all dairy cattle herds

Oregon = 1 swine herd link

South Dakota = 7: all dairy cattle​

​Texas = 36: all dairy herds, also listed as "affected" by NMTS, state link

Utah = 29: 29 dairy herds

Wisconsin = 1 dairy herd

Wyoming = 1 dairy herd​


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

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