Farms.com Home   Ag Industry News

U.S. Swine Herd Reaches Four Years TGEV Free

Jul 01, 2025
By Farms.com

No Positive TGEV Cases Reported Since March 2021 in U.S.

The U.S. swine herd has achieved a major milestone in animal health, completing four full years without a single reported case of Transmissible Gastroenteritis Virus (TGEV).

The last confirmed positive RT-PCR case was recorded on March 22, 2021, in Iowa, as per data from the Swine Disease Reporting System (SDRS).

TGEV, a viral disease affecting pigs, especially piglets under two weeks of age, is highly contagious. Symptoms include vomiting and diarrhea.

The virus, part of the Coronaviridae family, can be fatal for young pigs, though older pigs tend to recover more easily.

Since 2021, more than 500,000 PCR tests have been conducted across 47 states, covering all farm types and age groups. These consistent and widespread testing efforts have played a vital role in maintaining the disease-free status.

The Swine Disease Reporting System compiles data from six leading veterinary diagnostic labs to track swine enteric coronaviruses, including TGEV.

Regular monitoring, good hygiene practices, and strong farm biosecurity have contributed to this success.

The achievement signals major progress in the industry’s disease management, protecting both animal welfare and farm productivity. Continuous surveillance remains essential to prevent the re-emergence of this virus in the future.

Read the full story at National Hog Farmer.


Trending Video

Pork Industry Priorities - Dr. Brett Kaysen

Video: Pork Industry Priorities - Dr. Brett Kaysen


In this episode of The Swine it Podcast Show, Dr. Brett Kaysen, senior vice president of producer and state engagement lead at the National Pork Board, outlines a bold strategy for the pork industry's future. He explores how national and state collaborations are strengthening the U.S. pork supply chain, why swine health must take center stage, and the importance of youth involvement for long-term sustainability. Hear how leadership, strategy, and grassroots action are shaping tomorrow’s industry. Listen now on all major platforms!

"It’s all about driving demand, partnering with our states, and making for a healthier swineherd."

Meet the guest: Dr. Brett Kaysen / brett-kaysen-b2a970108 serves as senior vice president of producer and state engagement lead at the National Pork Board. With a Ph.D. in Animal Sciences from Colorado State University, his leadership spans academia, industry, and youth development. From advancing swine sustainability to leading grassroots collaborations, Dr. Kaysen brings over 20 years of insight to the pork sector.