US livestock sector emphasizes disease surveillance after screwworm case and hatchery microbe findings

A recent identification of New World screwworm in cattle in southern Texas prompted the National Pork Board and USDA officials to urge producers to intensify daily animal monitoring, promptly report any wound infestations, and ensure veterinary inspections before moving animals across state lines. The parasite, last seen in the United States during a 2016‑2017 outbreak affecting Florida Keys deer and other wildlife, is considered a foreign animal disease but is not contagious; experts say its impact on the swine industry is likely limited.

At the same time, a study presented by Zoetis at the IPPE conference in Atlanta revealed persistent Aspergillus and bacterial contamination across multiple US hatcheries. Sampling of egg rooms, air, water, and personnel showed the fungus frequently entering facilities via eggs and air, highlighting the need for comprehensive sanitation programs and ongoing environmental monitoring to protect chick health.