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Volume 32, Number 2—February 2026
Dispatch
Retail Milk Monitoring of Influenza A(H5N1) in Dairy Cattle, United States, 2024–2025
Natalie N. Tarbuck, John Franks, Jeremy C. Jones, Ahmed Kandeil, Jennifer DeBeauchamp, Lance Miller, Thomas Fabrizio, Karlie Woodard, Hannah J. Cochran, Madison C. Owsiany, Bryant M. Foreman, James F. Lowe, Richard J. Webby, and Andrew S. Bowman
Table
Estimated influenza A virus prevalence in retail milk by state and study period in study of retail milk monitoring of influenza A(H5N1) in dairy cattle, United States, 2024–2025*
| State | No. positive/no. tested (%) |
|
|---|---|---|
| Period 1 | Period 2 | |
| Arizona | 0/5 | 0/15 |
| Arkansas | 3/3 (100) | 0/5 |
| California | 0/3 | 33/55 (60) |
| Colorado | 5/20 (25) | 0/23 |
| Connecticut | 0/2 | |
| Florida | 0/24 | |
| Georgia | 0/1 | 0/3 |
| Idaho | 0/7 | |
| Illinois | 0/21 | |
| Indiana | 2/21 (9.5) | 0/31 |
| Iowa | 0/34 | |
| Kansas | 12/15 (80) | 0/5 |
| Kentucky | 0/1 | 0/6 |
| Maryland | 0/1 | 0/1 |
| Massachusetts | 0/2 | |
| Michigan | 5/16 (31.3) | 0/28 |
| Minnesota | 1/7 (14.3) | 0/25 |
| Missouri | 1/5 (20) | 0/24 |
| Nebraska | 0/4 | 0/9 |
| New Jersey | 0/5 | |
| New York | 0/10 | 0/23 |
| North Carolina | 0/5 | |
| Ohio | 2/18 (11.1) | 0/25 |
| Oklahoma | 3/3 (100) | 0/12 |
| Pennsylvania | 0/15 | |
| South Dakota | 0/2 | |
| Tennessee | 0/4 | |
| Texas | 27/33 (81.8) | 0/21 |
| Utah | 0/20 | |
| Virginia | 0/2 | 0/13 |
| Wisconsin |
0/12 |
|
| Total | 61/168 (36.3) | 33/477 (6.9) |
*The number of states included in surveillance increased from period 1 to period 2. Period 1, March 25–May 3, 2024; period 2, December 9, 2024–January 29, 2025.
Page created: January 16, 2026
Page updated: January 30, 2026
Page reviewed: January 30, 2026
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