FDA Authorizes Ivermectin for New World Screwworm—but There’s a Major Catch

Can ivermectin prevent New World screwworm in horses? The FDA has issued an Emergency Use Authorization for Ivermectin Liquid for Horses, but the authorization is limited to specific circumstances. It is prescription-only, provides short-term protection for no more than approximately 24 hours, and is not authorized to treat an existing screwworm infestation. In this video, we explain what the FDA’s New World screwworm emergency authorization means for horse owners, when ivermectin may be used, why it should not be administered routinely “just in case,” and why veterinary supervision remains essential. The authorization covers short-term prevention when Ivermectin Liquid for Horses is administered within approximately 24 hours after a foal is born or during the initial care of a fresh wound that could attract screwworm flies. It does not replace proper wound care, fly control, daily inspections, or treatment from a veterinarian. You will also learn: What New World screwworm is Why screwworm larvae are particularly dangerous Which horses may qualify for this medication How long the protective window lasts Why this product cannot treat an active infestation Why other ivermectin products should not be substituted Which wound changes require immediate veterinary attention How horse owners can reduce screwworm risks The FDA issued this Emergency Use Authorization on July 15, 2026. According to the agency, the product is available only by prescription from a licensed veterinarian and is intended for short-term prevention—not treatment. Read the official FDA announcement. This video is provided for educational purposes only. We are not veterinarians, and this information should not replace professional veterinary advice. If you notice moving larvae, worsening tissue damage, unusual drainage, a foul odor, increasing pain, or another concerning change in your horse’s wound, contact your veterinarian immediately. Do you think this emergency authorization will help horse owners prepare for the threat of New World screwworm? Share your thoughts below, and subscribe to Scholarly Equestrian for continuing horse-health news and verified updates. Chapters: 00:00 Can ivermectin prevent screwworm in horses? 01:04 What is New World screwworm? 04:19 What did the FDA authorize? 06:03 Prevention versus treatment 07:00 What horse owners should do 09:18 The most important takeaways #NewWorldScrewworm #Ivermectin #HorseHealth #EquineHealth #HorseOwners This video is for educational purposes and constitutes Fair Use under Section 107 of the US Copyright Act of 1976. Allowance is made for “Fair Use” for purposes of education, research, criticism, comment, and news reporting. This video is fully transformative and created in accordance with YouTube’s Content Reuse Policy under the Content Reuse Act. It includes original narration, commentary, educational context, visual edits, and added value through storytelling and analysis. No content is simply re-uploaded. #horse #horses #horsecare #horsenews #equestrian