U.S. Swine Herd Reaches Four Years TGEV Free

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.