First US Case of New World Screwworm in 60 Years Detected in Texas Calf

1-Minute Brief

The reappearance of the New World screwworm parasite raises concerns for US livestock health and agricultural biosecurity.

Key Facts

• The US Department of Agriculture confirmed detection of New World screwworm in a Texas calf.
• This is the first confirmed US case of the parasite since the 1960s.
• The affected calf was found near the US-Mexico border in South Texas.
• The US cattle herd is currently at its lowest level in 75 years.
• The parasite was detected in a 3-week-old calf in LaPryor, Texas, about 50 miles from the Mexico border.

What Happened

A flesh-eating parasite known as the New World screwworm was confirmed in a calf in South Texas, marking the first US case in approximately six decades, according to the Department of Agriculture.

Why It Matters

The detection of this parasite, previously eradicated from the US, poses a threat to livestock health and could impact the cattle industry, which is already facing historically low herd numbers.

What's Next

Agriculture officials are monitoring for additional cases and implementing containment measures to prevent further spread. Ongoing surveillance and response efforts are expected in the affected region.