The U.S. Department of Agriculture (USDA) has confirmed the presence of the New World screwworm in Texas, marking a significant concern for local livestock producers. The discovery was made when larvae were found in the umbilical area of a 3-week-old calf. This parasitic fly, known for its flesh-eating larvae, poses a serious threat to livestock, potentially leading to severe economic impacts if not addressed promptly.

Understanding the New World Screwworm

The New World screwworm is a parasitic fly that feeds on warm-blooded animals and, in rare instances, humans. It lays eggs in open wounds, and once hatched, the larvae burrow into living tissue, causing significant damage. Historically, the screwworm has been found in South America and parts of the Caribbean.

Historical Context and Previous Outbreaks

The USDA began tracking the screwworm in 1962, with the U.S. initiating an eradication program in 1957. Although declared eradicated in 1966, sporadic cases have occurred, including a major outbreak in 1972 affecting several states. The most recent outbreak was in the Florida Keys in 2016, primarily impacting wild deer.

USDA’s Response and Preventive Measures

In response to the recent detection, the USDA has established a 12-mile infested zone and implemented a quarantine to contain the spread. Increased trapping efforts are underway along the border, where at least 26,200 cases have been identified in Mexico, with 2,700 still active. Last year, the USDA temporarily closed southern border ports to livestock trade to prevent further spread.

While the screwworm does not threaten food safety, its presence could exacerbate the already low beef cattle inventory, impacting both farmers and consumers. The USDA’s swift actions aim to mitigate these risks and protect the agricultural community.

Original reporting: KCCI Des Moines — read the source article.