It has been a busy winter for the Ontario Animal Health Network, with the OAHN networks publishing many new species-specific resources, reports, and research projects. We anticipate a busy spring, with our OAHN AGM happening at the end of April, and the completion of multiple research projects.
Updated Anti-parasitics Tables for Cats and Dogs
These tables break down the different anti-parasitics for dogs and cats, outlining what species they are used for and what type of parasite they treat. The OAHN Companion Animal Network has released the updated version for 2026. There are two versions – one for pet owners (linked below), and one with more details intended for veterinarians. The vet version can be accessed from the below link, but you must be registered and logged in with OAHN to view. Please view it here: Anti-Parasitics Table for Cats and Dogs 2026 [1]
2025 OAHN Public Health Update
The annual update was published at the end of December and was created specifically for public health professionals in Ontario, to highlight pertinent topics from the last 12 months from the OAHN companion animal and other species networks, to help strengthen the link and communication between animal health and public health networks. Please view it here: Ontario Animal Health Network (OAHN) Public Health Update 2025 [2]
Webinar: Tackling CAEV by Dr. Fauna Smith (UC Davis) and Dr. Davor Ojkic (AHL)
The OAHN Small Ruminant network organized an informative webinar on tackling CAEV. Learn about the pathogenesis of the disease, risk factors for transmission, diagnostic testing methodologies and options in Ontario, and eradication/ control decisions. The recording is available here: Tackling CAEV Webinar [3]
Completed Projects and Resources
Below, please find a recently completed research project from the equine network, and a new resource from the bovine network.
- OAHN Equine Project: Serum selenium concentrations in Ontario broodmares and their foals [4]
- Factsheet: Bovine theileriosis (Theileria orientalis genotype Ikeda) [5]
New Reports
These are the most recent reports published by OAHN. We publish regularly, so be sure to check back in between newsletters to see what’s new. To view any of the veterinary reports below, please click on the link for each report, or go to OAHN.ca [6] and navigate to the species in which you are interested.
Swine Network – Q4 2025 Vet Report [7]
- Porcine Epidemic Diarrhea virus (PEDV) and Porcine Deltacoronavirus (PDCoV) Ontario Update
- Senecavirus A (SVA) Ontario Update
- OAHN veterinary clinical impression survey veterinary comments
- Animal Health Laboratory immediately notifiable disease review
- Laboratory diagnostic reports
- Ontario slaughter statistics
- CanSpotASF surveillance update
- OAHN projects- Now accepting samples!
- International disease topics of interest summary
Small Ruminant Network - Apr-Dec 2025 Vet Report [8]
- Animal Health Laboratory (AHL) data summary April – Oct 2025
- Provincial abattoir slaughter and condemnation data
- Small ruminant trace mineral analysis 2020-2025 by AHL
- Case report: Malignant catarrhal fever in Icelandic sheep
- International disease topics of concern
- Research highlights
Bovine Network - Aug-Oct 2025 Vet Report [9]
- Surveillance update
- Q3 Bovine data from AHL
- Project summary: Mycoplasma wenyonii and Candidatus Mycoplasma haemobos in Ontario
- Tips for testing for Mycoplasma wenyonii and Candidatus Mycoplasma haemobos
Equine Network - Q4 2025 Vet Report [10]
- Bits N Snips – Pancreatitis in horses
- Network member reports
- Syndromic and lab surveillance dashboard
- Equine research
- Ontario equine disease surveillance summary
Companion Animal Network - Sep-Dec 2025 Veterinary Need-2-Know Update [11]
- OAHN winter survey and lab data: Key results
- Rabies update: “Bat” news, good news
- H5N1 influenza: Spike in wild birds, dog in AB
- CAPCvet graphs: Lyme & Anaplasma serotrends
- Alert: Melarsomine
- Resource reminders