Safeguarding U.S. Agriculture: The Role of the National Animal Health Laboratory Network (NAHLN)

Farm Economy and USDA OversightHouse Agriculture Subcommittee on Livestock, Dairy, and Poultry · 2025-07-15 · 119th Congress
The House Agriculture Subcommittee on Livestock, Dairy, and Poultry held this hearing to examine the National Animal Health Laboratory Network (NAHLN), a 64-lab federal-state-university system responsible for detecting and responding to foreign and emerging animal diseases such as highly pathogenic avian influenza, new world screwworm, and African swine fever. Begins at 0:23:50
Transcript
Highlights

Title

National Animal Health Laboratory Network's role in disease response

Purpose

The House Agriculture Subcommittee on Livestock, Dairy, and Poultry held this hearing to examine the National Animal Health Laboratory Network (NAHLN), a 64-lab federal-state-university system responsible for detecting and responding to foreign and emerging animal diseases such as highly pathogenic avian influenza, new world screwworm, and African swine fever. Members and witnesses discussed recent funding increases from the reconciliation bill, ongoing H5N1 outbreaks in dairy and poultry, and the threat of new world screwworm spreading from Mexico. Begins at0:23:50

Who spoke

Chairman Tracey Mann (R-KS)0:24:14: Opened by describing NAHLN's growth from 12 to over 60 labs since 20020:24:57 and touted $233 million in new "one big beautiful bill" funding, including $10 million/year for NAHLN labs0:26:47; later questioned witnesses on the National Bio and Agro-Defense Facility (NBAF)0:59:50 and new world screwworm economic risk, citing USDA estimates of $732 million/year in Texas and up to $4.3 billion/year nationally1:01:19.

Ranking Member Jim Costa (D-CA)0:27:57: Noted California has seen over 70% infection in dairy herds amid the H5N1 outbreak0:29:30, criticized DOGE-driven cuts that fired a quarter of NAHLN's central coordinating office staff in February0:31:25, and introduced witness Dr. Annette Jones0:33:18.

Dr. Jamie Retallick, Director, Kansas Veterinary Diagnostic Laboratory (KVDL)0:38:56: Described KVDL as a level one lab with ~120 staff performing ~600,000 tests annually0:39:42, explained NAHLN's proficiency testing and overflow-testing role (currently covering California and Colorado)0:42:14, and detailed the lab's 2022 path from level two to level one status1:30:37; also noted KVDL experienced significant faculty/staff turnover requiring new internship pipelines1:39:20.

Dr. Terry Hensley, Assistant Lab Director, Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL)0:44:06: Described Texas's 1,248-mile border with Mexico and import of 1 million Mexican cattle annually as disease risk factors0:45:47; recounted TVMDL, Cornell, and Iowa State's 2024 collaboration that identified H5N1 in dairy cattle milk, leading to USDA's March 25, 2024 outbreak announcement0:47:09; said USDA and Texas Animal Health Commission are leading screwworm surveillance1:10:10.

Dr. Rodger Main, Director, Iowa State University Veterinary Diagnostic Laboratory0:48:40: Said ISU's lab processes over 125,000 cases and 1.7 million assays annually with 90%+ livestock/poultry submissions0:49:53; called NAHLN "a crown jewel" of USDA APHIS veterinary services0:52:24; said vaccine technology exists but trade impacts remain the principal barrier1:28:11.

Dr. Annette Jones, California State Veterinarian0:53:14: Compared NAHLN to a "smoke detector" for disease outbreaks0:54:13; said California's normal flu testing load of 450 samples/month spiked to 12,000/month (25x) during the H5N1 peak, requiring technicians from seven other states0:55:41; said network labs have run over a million H5N1 tests nationwide0:56:57; stated 12 of 17 states with infected dairy herds have also had poultry outbreaks traced to dairy0:58:42; urged vaccinating dairy cattle "yesterday," ahead of poultry0:58:13.

Rep. Randy Feenstra (R-IA)0:37:22: Introduced Dr. Main0:37:31; later asked about additional funding versus policy needs1:14:04 and pressed on avian flu (180 million birds affected, 30 million in Iowa) and African swine fever prevention1:15:55.

Rep. Josh Riley (D-NY)1:04:06: Cited bipartisan legislation with Rep. Zach Nunn creating criminal penalties for agroterrorism-related imports tied to foreign adversaries1:04:46; asked about veterinary workforce pipeline and STEM education in rural communities1:07:53.

Rep. Derek Van Orden (R-WI)1:09:11: Offered condolences to Dr. Hensley regarding Texas flooding0:09:19; pressed on who is "in charge" of screwworm tracking0:09:41 and offered to facilitate USDA contact with Mexican counterparts1:12:41.

Rep. Randy Feenstra (see above, second appearance combined).

Rep. Adam Gray (D-CA)1:19:12: Noted $25 million/year is insufficient for 64 labs nationwide1:21:21; asked Dr. Jones about best biosecurity practices for reducing H5N1 on farms1:21:46 and how labs build trust with skeptical producers1:23:26.

Rep. Mark Messmer (R-IN)1:24:43 *(labeled Barrett in transcript text but chair calls him "gentleman from Indiana, Representative Messmer")*: Cited potential costs of $2 billion (foot-and-mouth via HPAI comparison) and $200 billion (foot-and-mouth disease)1:25:12; asked Dr. Jones to elaborate on prioritizing dairy cattle vaccination over swine, beef, and poultry1:25:42.

Rep. Mark Harris (R-NC)1:30:01: Asked Dr. Retallick to explain the process of advancing from level two to level one NAHLN lab status1:30:37; asked panel about producer education and outreach efforts1:32:09.

Rep. Jahana Hayes (D-CT)1:34:38: Noted the UConn NAHLN lab trains ~40 students annually1:35:09; cited a 2023 Johns Hopkins study finding food-animal veterinarian numbers dropped 90% since WWII, with under 2% of vets working exclusively with food animals1:38:22; asked about KVDL's 62% faculty turnover in 20221:38:50.

Rep. Erin Houchin, Indiana (referred to by chair as "Representative Mesmer" in transcript but context/state indicates the Indiana member asking about turkey production)1:40:22: Noted turkey products are nearly three-quarters of livestock production in her district and Purdue ran over 11,000 avian flu tests in two months1:40:49; asked witnesses to compare federal NAHLN funding (~$250,000/lab) against livestock industry value ($12.9 billion in Kansas, $35 billion in Iowa)1:42:26; referenced Secretary Rollins's national farm security action plan and asked about bioterrorism preparedness1:43:32.

Key moments

The "one big beautiful bill" reconciliation package included $233 million/year for NAHLN, animal disease preparedness, and vaccine banks combined, with $10 million/year specifically for NAHLN labs through FY2030, on top of existing discretionary funding0:26:311:02:54.

Costa said DOGE-driven cuts fired a quarter of the employees at NAHLN's central coordinating office in February, in the middle of the ongoing HPAI outbreak0:31:25.

Hensley described how TVMDL, Cornell, and Iowa State collaborated on samples from sick Texas dairy cattle in March 2024, confirming H5N1 in mammary tissue and milk — leading to USDA's unprecedented March 25, 2024 announcement of HPAI in U.S. dairy cattle0:47:090:47:39.

Jones detailed California's H5N1 surge: normal testing of 450 samples/month rose to 12,000/month (25x) at the outbreak's peak, requiring technician deployments from seven other states to expand capacity0:55:100:56:00.

Jones said 12 of the 17 states with infected dairy herds have also experienced poultry outbreaks directly traced to those dairy cases, and urged vaccinating dairy cattle before poultry, swine, or beef cattle0:58:421:26:09.

Van Orden pressed Hensley on who leads screwworm coordination, with Hensley identifying USDA and the Texas Animal Health Commission as the primary coordinators via weekly interagency calls1:10:101:10:29.

USDA estimates cited by Chairman Mann: a temporary screwworm outbreak in Texas alone would cost producers $732 million/year, rising to $4.3 billion/year and over $10 billion in total economic loss if it spreads across the pest's historic range1:01:191:01:48.

Retallick disclosed KVDL experienced 62% faculty turnover in 2022, addressed through new technician internship pipelines and expanded residency programs funded partly through NAHLN1:38:501:39:20.

Witnesses agreed vaccine technology for dairy cattle exists (two companies developing vaccines) but international trade impacts remain the principal barrier to deployment1:28:521:29:151:29:38.

Messmer noted federal infrastructure funding is roughly $250,000 per level-one lab against state livestock industries valued at $12.9 billion (Kansas) and $35 billion (Iowa)1:42:421:43:23.

Metadata

CommitteeHouse Agriculture Subcommittee on Livestock, Dairy, and Poultry
Chamber / CongressHouse · 119th Congress
Date2025-07-15
TypeHearing
Witnesses
Dr. Jamie Retallick — Director/Professor, Kansas Veterinary Diagnostic Laboratory
Dr. Terry Hensley — Assistant Lab Director - Diagnostic Services, Texas A&M Veterinary Medical Diagnostic Laboratory
Dr. Rodger Main — Professor & Director of the Iowa State University Veterinary Diagnostic Laboratory, Veterinary Diagnostic and Production Animal Medicine, Iowa State University
Dr. Annette Jones — Director and California State Veterinarian, Animal Health and Food Safety Services, California Department of Food and Agriculture
Videoyoutube
Transcript245 caption blocks · 13,034 words · 1:46:40 runtime
EventCongress.gov 118471