The Swine Health Information Center (SHIC) has issued an advisory to livestock producers regarding the recent identification of New World screwworm in Chiapas, Mexico. Following an earlier report from Guatemala in October, this development underscores the need for vigilance among producers, particularly those with outdoor-reared animals.
What is New World Screwworm?
New World screwworm is caused by a parasitic fly that lays its eggs near open wounds on warm-blooded animals. The larvae infest the wound, leading to significant infections that can result in painful, draining wounds, reduced productivity, and, in severe cases, mortality. While the disease has not been detected in the United States, its presence near the southern border of Mexico raises concerns for North American livestock producers.
Dr. Lisa Becton’s Warning
Dr. Lisa Becton, Associate Director of the Swine Health Information Center, emphasizes the serious impact of screwworm infestations:
“This is a very significant concern for grazing animals and any warm-blooded animal. Producers should monitor for non-healing or draining wounds and report any concerns to their herd veterinarian immediately.”
Key Takeaways for Producers:
- High-Risk Animals: Outdoor-reared livestock are at higher risk due to exposure to the parasitic fly.
- Monitoring and Reporting: Be vigilant for signs of infection, such as non-healing wounds or unexplained illness, and report any suspicions to a veterinarian.
- USDA and SHIC Collaboration: Monitoring efforts are ongoing in collaboration with international partners to prevent the spread of this disease.
Stay Informed
The Swine Health Information Center provides monthly domestic and global swine disease monitoring reports. These resources are available on their website to help producers stay updated on emerging threats.
As the situation develops, it’s critical for swine and livestock producers to remain proactive in protecting their herds. For more updates, visit SwineWeb.com.
