Over a year ago, I wrote a few posts about changes to Clinical and Laboratory Standards Institute (CLSI) veterinary antimicrobial susceptibility testing guidelines. When a bacterium is grown in a lab and tested for susceptibility to different drugs, the lab looks to these CLSI guidelines to determine whether they should consider the bug susceptible
Dientamoeba fragilis in Dogs and Cats

I get variations of this question not uncommonly from veterinarians:
A client just came in and said they/their kid was diagnosed with Dientamoeba fragilis infection and their physician said to test/treat their dog. What should I do?
On one hand, it’s nice to see physicians thinking about animal exposures. On the other hand, it sometimes…
Podcast: H5N1 Influenza and Raw Pet Food

The more H5N1 influenza continues to circulate in wild and domestic birds around the world, including here in North America, the more we have to be concerned about exposure of pets to H5N1 influenza through raw food diets. Recent documented infections in cats fed raw meat from infected birds have highlighted these concerns. For…
Infographic: Canine Acute Diarrhea Treatment
Back in March 2024, I wrote a post about a systematic review of the efficacy of antibiotics and probiotics and the associated treatment guidelines for acute diarrhea in dogs from the European Network for Optimization of Veterinary Antimicrobial Treatment (ENOVAT). Now, we have an ENOVAT/WSAVA infographic to put all that into a…
PCR Testing for H5N1 Influenza in Cats and Dogs
- For cats and dogs, the recommended
US FDA Raw Pet Diet Directive

The FDA has issued a directive to pet food producers to ensure that their food safety plans address H5N1 influenza contamination issues. It’s in response to multiple cases of H5N1 avian influenza in domestic and wild cats fed contaminated raw diets containing poultry. Infection was fatal in many of these cats, and this also…
Influenza Vaccination in Dogs: Cross Protection Against H5N1?

TLDR: Nope.
These days I commonly get the question ”Does vaccination of dogs with available canine influenza vaccines protect them from H5N1 avian flu?” While we don’t have any hard data on this, we still have a pretty good idea of the answer.
One of the challenges with flu vaccination (in any…
Recall of Yet Another High Pressure-Pasteurized Raw Pet Food Diet

Blue Ridge Beef has (again) recalled a diet because of Salmonella contamination – this time a kitten diet. As is often the case, the issue was identified after a pet that was fed the diet got sick. This follows a recall of a puppy diet from the same company in December for Salmonella contamination was…
Overview: H5N1 Influenza, Raw Diets and Pets

Issues with raw diets and H5N1 influenza risk in cats (and dogs) have gotten a lot of attention in the last week or two. Like most emerging disease situations, it’s still fluid, and we’re learning more as time goes on, but we know enough at this point to at least make some basic assessments and…
H5N1 Testing in Dogs and Cats: Who, When, Why, How?

Warning: Long post. Lots to unpack here.
As H5N1 avian influenza continues to spillover into domestic animals and people, the question of when to test animals (especially cats) keeps coming up. Testing isn’t just a matter of swabbing a bunch of animals and sending the samples to the lab (which unfortunately is not uncommonly done…