06/12/2026
Be alert, not alarmed – protect yourself and your animals from screwworm by knowing the signs. Be extra vigilant with treating open wounds and monitoring changes in behavior.
Warning Signs:
- Open wounds that worsen or do not heal
- Visible larvae or maggots
- Swelling, discharge, or foul odor
- Animals licking or biting at a wound
- Restlessness, isolation, or unusual behavior
High-Risk Situations:
- Recent calving and exposed navels
- Branding, castration, dehorning, or surgery wounds
- Untreated cuts or bites
- Animals moved before wounds are healed
- Warm weather conditions with increased fly activity
For more information, visit the official New Mexico screwworm website at: https://screwwormnm.org/
New Mexico Department of Agriculture New Mexico Department of Health New Mexico Department of Wildlife New Mexico Livestock Board