Two New HPAI Detections in Lancaster County, Earl Township

Center for Dairy Excellence

October 21, 2025 Sarah S News Team DHIA, News 0

To help keep HPAI updates simple and streamlined, we will send out an HPAI Update on days when there are updates and news to report about the situation, new detections, and new control zones and required surveillance that affect PA dairy operations. Here’s the update for October 17. 
  • October 17th update: There are non-negative HPAI results reported for two new Live Bird Market supply flocks in Lancaster County, Earl Township on 10/16/2025. A 10 km control area is active surrounding both premises and a surveillance zone extends from 10-20km surrounding both premises. As a reminder, this is the strain being transmitted through wild geese in the Eastern Fly-Way Zones and is not the strain that has infected dairy cattle in other states.
  • What this means for dairy farmers in the nearby area: If a dairy is located within the 3km radius (Infected Zone) surrounding the affected flocks, they are subject to mandatory weekly bulk tank or in-line milk sampling for surveillance purposes.
  • How to tell if you’re in the Infected Zone: If your dairy is in the Infected Zone, the Department of Agriculture should be reaching out to you. However, you can check the HPAI tracker map (see map details below) to see if your dairy’s address falls within the 3km Infected Zone.
  • How the map works: When you look at the map, counties with detections are marked as red, orange signifies the control areas, and yellow represents the surveillance areas. When you enter your dairy farm’s address in the search bar, there will be a message that lets you know whether you’re required to test or not. If you are within 3km of the infected zone and are required to test, PDA has a surveillance team that will reach out to you directly. However, if you believe that your contact information with the state could be outdated, email RA-ahds@pa.gov.
My dairy farm is showing up in an Infected Zone. Now what? 
  • When a positive case is identified, the PA State Vet’s Office will reach out directly to any dairy farms within the Control Infected Zones about testing.
  • Each herd must have a USDA issued federal premises identification number registered with the Department. Any new farms can complete the attached premises registration form to obtain a premises ID number. Dairy premises can be reported to RA-PREMISE-ID@pa.gov.  A Premise ID will ensure they appear on the Department’s map so they can be alerted to new infected premises and any surveillance requirements
  • Per the Department’s response plan, dairies in the Infected Zone shall submit weekly bulk tank or in-line milk samples representing the entire milking herd until the control area is closed.
  • Email the Department at RA-ahds@pa.gov with questions.
  • The Pennsylvania Department of Agriculture encourages dairy producers to email their completed biosecurity plans to AG-bioplans@pa.gov for review.
Note: The USDA has confirmed that there is no threat to human health and milk. Dairy products continue to remain safe to consume.

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