OAHN Update – December 2025

Mike Deane, Tanya Rossi

Animal Health Laboratory, University of Guelph, Guelph, ON.

This fall, the OAHN networks have completed and published veterinary and producer reports and species-specific resources. We anticipate a busy winter, with the completion of many active research projects, as well as new reports and resources.

Factsheet: Asian longhorned tick – An encroaching threat

The OAHN Bovine Network created a new factsheet to help vets and producers learn about the Asian longhorned tick. This resource provides information about the tick, its health and epidemiological impacts, early detection, and control measures. You can view this resource here: Factsheet: Asian longhorned tick – An encroaching threat.

Fish Network Courses

Over the past two years, the OAHN Fish Network has created four free courses for aquaculture producers and fishers. These courses are available through Thinkific.

• Working Effectively with an Aquaculture Veterinarian – Thinkific Course
• Biosecurity for Aquaculture Producers – Thinkific Course
• Humane Harvest for Recreational Fishers – Thinkific Course
• Humane Slaughter for Aquaculture Producers – Thinkific Course

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 and navigate to the species in which you are interested.

Swine Network – Q2 2025 Vet Report

• Senecavirus A (SVA) Ontario update
• PEDV / PDCoV cases have decreased in Q2 2025
• 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

Poultry Network  - Q3 2025 Vet Report

• Avian metapneumovirus (aMPV) detections status and vaccines
• Poultry Veterinary Survey Highlights – Q3 2025
• Events and News

Bovine Network  - May-Jul 2025 Vet Report

• Global Surveillance Update
• Q2 Bovine Data from AHL
• Bovine Mineral Testing 2022-2025
• HPAI in Dairy Cattle Update

Equine Network  - Q2 2025 Vet Report

• Bits N Snips
• Infographic – Fevers of Unknown Origin
• Infographic – Potomac Horse Fever in Ontario
• Network Member Reports
• Syndromic and lab surveillance dashboard
• Equine Research
• Ontario equine disease surveillance summary

Companion Animal Network  - May-Aug 2025 Veterinary Need-2-Know Update

• OAHN summer survey and lab data: Key results
• Vaccine-strain canine distemper cases
• Rabies update: Bats bats bats bats
• Salmonella in people: Dog food / treats link
• CAPCvet graphs
• Nasty & noteworthy parasites
• H5N1 flu: Still here
• Update: Lyme disease infographic