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
Brucella canis Infection in a Veterinarian
I’m on the way home from ESCMID Global, a clinical microbiology and infectious disease conference. Although the conference didn’t include much veterinary-specific content, it did include a good collection of abstracts about zoonotic diseases, including a couple about diseases in veterinarians, one of which described an infection with Brucella canis.
I’ve written about
(Inadequate) Rabies Titres in Imported Dogs
Many countries have import requirements for dogs based on rabies control (among other things), primarily based on the dog’s rabies vaccination history, plus or minus rabies antibody titre (RAT) testing. A few years ago (with support from the Ontario Animal Health Network), we studied RATs in dogs imported into Ontario by rescues (Belanger
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
Rabies Titres and Imported Dogs
Most people don’t realize the massive number of dogs that are imported into Canada every year, for all kinds of reasons: from people moving with their own pet, to importation of large shipments of dogs from puppy mills or rescues (the latter ranging from really good operations to really dodgy). Moving animals (or people)
Local Risks of Imported Heartworm in Dogs
I’ve had a few questions about the risks posed by heartworm in imported dogs to local dogs. (This also speaks to just how often we import heartworm-infected dogs, but that’s another story…). Here’s a bit of a deeper dive into the topic based on a fictionalized (but very typical) scenario:
You live in Guelph, Ontario
Canine Leishmaniosis and Canine Importation
Today, we have a guest post from One Health epidemiologist extraordinaire (and great collaborator) Dr. Katie Clow and extraordinaire-in-training Sydney DeWinter.
If you have been following the ongoing saga regarding canine importation regulations put forth by the US Centers for Disease Control and Prevention (CDC), dog movement is likely top of mind and
Major Update: Rules for Movement of Dogs From Canada to the US (July 22)
This is really good news – albeit a bit frustrating that we spent so much time working on the issue over the last couple of months, only to have the US CDC largely walk back most of what they announced with regard to movement of dogs from low-risk countries for dog rabies back in May
FAQ: Rules for Movement of Dogs From Canada to the US (July 19)
UPDATE: Shortly after this was posted, the US CDC walked back most of the requirements discussed below. This post will be left up for the historical record, but please note that the information no longer applies. Updated information was posted on July 22, 2024.
Here’s our current list of frequently asked questions about the impending