Here’s a screenshot of a quick but useful New World Screwworm (NWS) resource for animal shelters that was developed by University of Wisconsin-Madison Shelter Medicine Program in collaboration with a number of shelter organizations and shelter medicine experts. With the continued re-emergence and spread of NWS from Central America back into the southern US
New World Screwworm Prevention and Treatment Options in Dogs and Cats
UPDATE: June 11, 2026. Nitenpyram has also been given emergency use approval (EUA) for dogs and cats over 2 pounds and 4 weeks of age.
While completely expected given the steady march of New World screwworm (NWS) through Central America and Mexico over the last several years, this horrific parasite finally crossed the US
Releasing Mosquitoes to Reduce Disease? There’s Method to That Madness
Google’s parent company Alphabet has attracted some attention recently base on its request to release up to 32 million mosquitoes in Florida and California. No, it’s not part of a master plan to annoy people or spread disease. Believe it or not, it’s actually an effective method to reduce mosquitoes and the risk of
New World Screwworm: FDA Emergency Use Authorization for Lotilaner in Dogs
New World Screwworm (NSW) is a nasty parasitic infestation (with a very high ick factor) that’s back on the radar in North America, re-emerging after several decades of highly successful control and eradication efforts that had pushed its northern reach back as far as Panama. It has now made to back as far as northern
New World Screwworm: Primer for Canadian Veterinarians
I remember the first case of fly myiasis (aka fly strike, maggot infestation) in general practice. I was a very new grad called to look at a lamb owned by someone who had a few sheep. The complaint was that the lamb wasn’t doing well. It was laying down when I arrived and I grabbed