08/14/2026
While California is currently screwworm-free, recent detections in Texas and Mexico mean it’s time to stay vigilant!
Unlike common houseflies, screwworm flies lay eggs on open wounds of living animals (pets, horses, livestock, and newborns). Eggs hatch within 24 hours into larvae that burrow into healthy tissue.
What to watch for:
⚠️ Scratches, bites, or wounds that rapidly worsen
⚠️ Visible maggots or white eggs in/around wounds
⚠️ Unpleasant odor or extreme licking, biting, and discomfort
3 Ways to Protect Your Pets:
1️⃣ Clean & cover wounds: Treat scrapes, bites, and surgical sites right away.
2️⃣ Stay protected: Keep up with veterinarian-approved flea, tick, and fly preventatives.
3️⃣ Check daily: Inspect traveling animals and newborn umbilical sites regularly.
🚨 What to do if you suspect screwworm:
* DO NOT flush maggots or throw them in the trash!
* DO collect a sample from deep within the wound and seal it in 70% rubbing alcohol.
* CALL YOUR VETERINARIAN IMMEDIATELY. Screwworm is a reportable condition, and quick action is crucial.
Have questions or notice a suspicious wound? We're here to help keep your animals safe and healthy! Read more on our blog: https://www.wiseandwonderful.vet/blog/newworld-screwworm
