Companion Animal Network
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Latest Veterinary Need-2-Know (N2K) Update
The Jan-Apr 2026 update includes:
OAHN spring survey and lab data; Rabies update: Be bat ready, and travel aware!; Keep a lookout! Summer 2026 hazards; Anti-parasitics table: 2026 update; Survey: Antibiotic Prescribing Practices; Antiviral stewardship: FIP drugs … Read More >
Vaccination Timing and Intervals for Dogs and Cats
Available to vets and RVTs that are logged into OAHN.ca. This information summary and references are intended to assist veterinarians with making vaccination decisions for patients based on what evidence is and is not currently available, their professional judgement, and individual considerations for patients and clients within an established veterinarian-client-patient relationship (VCPR). … Read More >
Disease Surveillance
Seasonal Need-2-Know Updates
Clinical Impressions Survey Data
Clinical impressions survey results are available upon request by emailing oahn@uoguelph.ca. Noteworthy information from each survey is typically summarized in the seasonal companion animal N2K update. To receive the link to each survey (every 4 months) sign up here or email oahn@uoguelph.ca. Your input as a veterinary professional practicing in Ontario is greatly appreciated!
Laboratory Data
26 Jan , 2026
Companion Animal Parasite Council: Cat and Dog Graphs (July 2020 – August 2026)
26 Apr , 2025
Companion Animal Lab Data
The companion animal network reviewed a summary of selected infectious-disease related data from the AHL on an annual basis, from 2016-2025. The applicable spreadsheets can be made available upon request to OAHN network members (veterinarians or RVTs) by contacting oahn@uoguelph.ca.
Annual Reports and Updates
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
10 Feb , 2020
Ontario Animal Health Network Annual Update
The annual OAHN Update reviews the past year at a glance, Information sharing initiatives, Disease investigations, and our OAHN network members from all of the OAHN networks. Take a few moments to read through and review how the OAHN disease surveillance networks worked to improve animal health in Ontario. OAHN Annual Update 2018-2019 OAHN L’année …
09 Mar , 2020
Annual OAHN Public Health Updates
Created especially for public health professionals in Ontario, highlighting pertinent topics the OAHN companion animal network’s reports.
24 Apr , 2018
Staying Ahead of the Curve Magazine: The Disease Surveillance Plan 2013-2018
Detailing what the DSP and OAHN completed from 2013-2018, including summaries by network, research projects, equipment purchased, tests developed, and much more.
Resources
Clinical Resources
02 Jun , 2025
Antimicrobials for Use in Dogs
This table provides a summary of current systemic antimicrobial treatment guidelines for common clinical conditions in dogs as per the CPHAZ guidelines available through the FirstLine app.
01 Jun , 2025
Antimicrobial Categorization for Dogs and Cats
This table shows the categorization of antimicrobial drugs commonly used and approved for use in dogs and cats in Canada according to the World Health Organization List of Medically Important Antimicrobials (2024).
27 May , 2024
Private: Factsheet: Drug-Resistant Hookworms in Dogs
This info sheet covers: Importance, resistance vs larval leak, the FECRT & interpretation, environmental considerations, treatment, and Additional resources
14 Dec , 2020
Antimicrobial Stewardship Resources
A list of helpful resources for educating veterinary staff about AM stewardship, as well as developing and sustaining a clinic AM stewardship program (ASP).
18 Feb , 2026
Anti-Parasitics Table for Cats and Dogs 2026
A table breaking 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 created a simplified table for pet owners, and a veterinary version.
Private: Anti-Parasitics Table for Cats and Dogs for Veterinarians 2026
A table breaking down the different anti-parasitics for dogs and cats, outlining what species they are used for and what type of parasite they treat.
04 Aug , 2021
OAHN Companion Animal Research Project: Prevalence of seroconversion to SARS-CoV-2 among dogs, cats and ferrets in close contact with humans with confirmed or probable COVID-19
23 Mar , 2020
Species-Specific COVID-19 Resources- ARCHIVED 31-Dec-2021
Below is an ARCHIVED list of resources for veterinary staff and animal owners related to the COVID-19 pandemic. This list of resources is no longer being updated as of December 31, 2021. Please contact oahn@uoguelph.ca if you find ay links that are broken or no longer valid and should be removed. Companion Animal: OAHN COVID-19 Mini-Podcasts for …
16 Mar , 2020
COVID-19 Related Resources for Veterinarians – ARCHIVED 31-Dec-2021
OAHN has compiled a list of resources for veterinary staff and animal owners related to the COVID-19 pandemic.
06 Mar , 2019
Infographic: Laboratory Submissions: Naughty Vs. Nice
10 tips to help you get the most out of your diagnostic laboratory dollars.
Infectious Disease Information and Graphics
[su_spoiler title=”Blastomycosis” style=”default” icon=”plus” anchor=”” class=””]26 Jan , 2022
Infosheet: Blastomycosis for Dog Owners
To download a PDF of this document, please click here: https://www.oahn.ca/wp-content/uploads/2022/02/Blasto-Infosheet-Format-vF.pdf What is blastomycosis? Blastomycosis is an infection caused by a fungus called Blastomyces dermatitidis. It most commonly infects the lungs, but the fungus can spread from there to many other organs in the body as well. The fungus can also rarely infect open wounds. Blastomyces …
10 May , 2019
Fact Sheet: Brucella canis
A summary of what practitioners need to know regarding clinical signs, transmission, diagnosis, and prevention of Brucella canis.
24 Feb , 2026
OAHN Companion Animal Project: Haplotyping of Echinoccus multicularis in domestic, captive and wildlife species in Ontario (in progress)
03 Jan , 2017
Infographic: Emerging Risk: Echinococcus multilocularis in Ontario – 2019 UPDATE
Learn about this emerging disease in Ontario, how it is spread, and what owners and vets can do.
22 Jan , 2016
Resources for Echinococcos multilocularis
Key facts, prevention, EM in Ontario and a handout for pet owners.
22 Jan , 2020
Leptospirosis diagnostics
Leptospirosis testing recommendations and a diagnostic algorithm for companion animals
04 Jul , 2016
Infographic: Brush up on Managing Lepto Patients
Help keep veterinary staff and clients safe by following these steps when dealing with leptospiroris.
01 Aug , 2026
Infographic: Ticks and Lyme Disease in Ontario – 2026 UPDATE
An infographic and references for veterinarians on ticks and Lyme disease in Ontario.
27 Jul , 2022
Tick Checklist for Dog Owners
Find out what to do if you find a tick on your pet.
22 Jun , 2026
Private: Vaccination Timing and Intervals for Dogs and Cats
These resources are intended to assist veterinarians with making vaccination decisions for patients presented for revaccination outside of the label directions, or when no specific revaccination interval is provided, within an established veterinarian-client-patient relationship (VCPR).
13 Aug , 2024
Need-2-Know: Bats in Ontario
A primer on bats in Ontario, and what to do if you encounter a live bat indoors.
16 Feb , 2023
Guide d’évaluation des risques liés à la rage (Rabies Risk Assessment Flowchart – French)
OAHN Companion Animal Research Project: Whiteboard Rabies Video
Details, and the educational rabies video produced by this project.
15 Jul , 2022
Veterinary Checklist: Dogs imported from Ukraine
To download a PDF of this document, please click here: https://www.oahn.ca/wp-content/uploads/2022/07/OAHN-Companion-Animal-Ukraininian-Dog-Infosheet-FINAL-July-15-2022.pdf
24 May , 2022
Rabies Risk Assessment Flowchart
View and download this veterinary handout.
10 May , 2021
The Rabies Reporter
The Rabies Reporter is a scientific newsletter about current issues in rabies research and control.
27 May , 2019
Private: Rabies Resource Page for Veterinarians
Find videos on how to obtain rabies samples from small and large mammals, as well as the rabies risk assessment flow chart.
21 Jan , 2019
Private: MNRF Oral Rabies Vaccine Bait Infographic
A great visual resource for veterinarians regarding oral rabies vaccine baits in Ontario, courtesy of the Ministry of Natural Resources and Forestry. MNRF Oral Rabies Vaccine Bait Infographic
15 Dec , 2015
OAVT Rabies Tips for Small Animal Hospitals
Find out more about rabies response program.
28 Jul , 2017
Raw Food Diet Resources
Links to podcasts, and information on raw food, and infectious diseases.
01 Aug , 2026
Infographic: Ticks and Lyme Disease in Ontario – 2026 UPDATE
An infographic and references for veterinarians on ticks and Lyme disease in Ontario.
20 Jun , 2022
Infographic: Must Know Facts About Canine Distemper
What it is, how it spreads, how to protect your pets, and more.
26 Jan , 2022
Infosheet: Blastomycosis for Dog Owners
To download a PDF of this document, please click here: https://www.oahn.ca/wp-content/uploads/2022/02/Blasto-Infosheet-Format-vF.pdf What is blastomycosis? Blastomycosis is an infection caused by a fungus called Blastomyces dermatitidis. It most commonly infects the lungs, but the fungus can spread from there to many other organs in the body as well. The fungus can also rarely infect open wounds. Blastomyces …
22 Jan , 2020
Leptospirosis diagnostics
Leptospirosis testing recommendations and a diagnostic algorithm for companion animals
03 Jan , 2017
Infographic: Emerging Risk: Echinococcus multilocularis in Ontario – 2019 UPDATE
Learn about this emerging disease in Ontario, how it is spread, and what owners and vets can do.
04 Jul , 2016
Infographic: Brush up on Managing Lepto Patients
Help keep veterinary staff and clients safe by following these steps when dealing with leptospiroris.
Antimicrobial Stewardship Information and Graphics
[su_spoiler title=”Bacterial Cystitis” style=”default” icon=”plus” anchor=”” class=””]22 Jul , 2019
Private: Infographic: Bacterial Cystitis in Cats vs Dogs
Find out the differences and similarities of bacterial cystitis in cats and dogs.
04 Nov , 2019
Private: Infographic: Canine Infectious Respiratory Disease Complex
Find out about CIRDC, treatment, and when to use microbials.
06 Mar , 2019
Private: Infographic: Feline Upper Respiratory Tract Disease and Antibiotics
Infographic to guide your use of antibiotics when it comes to respiratory tract disease.
02 Jun , 2025
Antimicrobials for Use in Dogs
This table provides a summary of current systemic antimicrobial treatment guidelines for common clinical conditions in dogs as per the CPHAZ guidelines available through the FirstLine app.
01 Jun , 2025
Antimicrobial Categorization for Dogs and Cats
This table shows the categorization of antimicrobial drugs commonly used and approved for use in dogs and cats in Canada according to the World Health Organization List of Medically Important Antimicrobials (2024).
19 Dec , 2024
Need-2-Know: Parvovirus for dog owners
A high-level factsheet for dog owners and community members in high-risk areas and scenarios to help raise awareness about canine parvovirus, how serious it can be, and basic prevention and control measures, with emphasis on the importance of vaccination.
27 May , 2024
Private: Factsheet: Drug-Resistant Hookworms in Dogs
This info sheet covers: Importance, resistance vs larval leak, the FECRT & interpretation, environmental considerations, treatment, and Additional resources
27 Jul , 2022
Tick Checklist for Dog Owners
Find out what to do if you find a tick on your pet.
02 Jan , 2020
Infection Prevention and Control (IPC) Best Practices for Small Animal Veterinary Clinics
Newly updated Infection Prevention and Control Best Practices for Small Animal Veterinary Clinics are now available, and we’d love to hear how you implement them in your clinics!
03 Oct , 2016
Infographic: Using the Best Medicine & Reducing Antibiotic Use
Tips on how to reduce antibiotic use in your veterinary practice.
06 May , 2019
Private: Infographic: Itchy Dogs: Topical Treatments & Culture-Critical Cases
Learn about superficial bacterial folliculitis, sometimes called superficial pyoderma.
28 Apr , 2023
Private: Infographics: Acute Diarrhea and Giardia in Cats and Dogs
Two infographics illustrating what vets need to know when it comes to giardia or acute diarrhea in cats and dogs.
04 Nov , 2019
Private: Infographic: Canine Infectious Respiratory Disease Complex
Find out about CIRDC, treatment, and when to use microbials.
22 Jul , 2019
Private: Infographic: Bacterial Cystitis in Cats vs Dogs
Find out the differences and similarities of bacterial cystitis in cats and dogs.
06 May , 2019
Private: Infographic: Itchy Dogs: Topical Treatments & Culture-Critical Cases
Learn about superficial bacterial folliculitis, sometimes called superficial pyoderma.
06 Mar , 2019
Private: Infographic: Feline Upper Respiratory Tract Disease and Antibiotics
Infographic to guide your use of antibiotics when it comes to respiratory tract disease.
03 Oct , 2016
Infographic: Using the Best Medicine & Reducing Antibiotic Use
Tips on how to reduce antibiotic use in your veterinary practice.
Podcasts
15 Feb , 2017
Companion Animal Podcasts
To access all OAHN Companion Animal Podcasts, click here.
Network Projects
19 Jun , 2026
OAHN Companion Animal Project: Surveillance of Rhipicephalus spp. and Haemaphysalis longicornis in dogs in Ontario (in progress)
24 Feb , 2026
OAHN Companion Animal Project: Haplotyping of Echinoccus multicularis in domestic, captive and wildlife species in Ontario (in progress)
OAHN Companion Animal Project: Rickettsia rickettsii seroprevalence in dogs in an area of suspected Rocky Mountain Spotted Fever emergence (in progress)
17 Apr , 2024
OAHN Wildlife Project: Pilot Surveillance for Avian Influenza Virus (AIV) in Feral Cats (in progress)
09 Jan , 2023
OAHN Companion Animal Research Project: Whiteboard Rabies Video
Details, and the educational rabies video produced by this project.
31 Oct , 2022
Rabbit Hemorrhagic Disease Surveillance Project
The OAHN wildlife and companion animal networks have also received approval for a joint project to provide subsidized testing for cases in deceased domestic rabbits that meet certain high-risk criteria, as well as testing for high-risk cases from rehab facilities. It is anticipated that submissions under this surveillance project will be accepted beginning in November 2022. Watch …
04 Aug , 2021
OAHN Companion Animal Research Project: Prevalence of seroconversion to SARS-CoV-2 among dogs, cats and ferrets in close contact with humans with confirmed or probable COVID-19
03 Jan , 2020
OAHN Companion Animal Research Project: Update of Infection Prevention and Control Best Practices for Small Animal Veterinary Clinics
We have created a report on best practices for infection prevention and control in small animal veterinary clinics
18 Nov , 2019
OAHN Companion Animal Research Project: Prevalence of selected pathogens in dogs recently imported from Asia
This project is currently in-progress. Check out the poster detailing this project.
OAHN Companion Animal Research Project: Brucella canis in commercial dog breeding kennels in southern Ontario
Poster, report summary and factsheets from OAHN Companion animal network’s research investigation into Brucella canis in commercial dog-breeding kennels in Ontario
23 May , 2018
OAHN Companion Animal Project: Companion animal infographics
Executive summary, full report, and poster for the OAHN Companion Animal Infographic project.
23 Mar , 2018
Grad Student Feature: Jonathon Kotwa and Echinococcus multilocularis in Wild Canids
Jonathon D. Kotwa completed his PhD in the Department of Pathobiology at the University of Guelph.
More Helpful Links
14 Dec , 2020
Antimicrobial Stewardship Resources
A list of helpful resources for educating veterinary staff about AM stewardship, as well as developing and sustaining a clinic AM stewardship program (ASP).
05 Aug , 2020
Canine importation, rescue and related resources
Helpful resources for veterinarians working with owners of newly adopted dogs, as well as those importing and rescuing dogs.
20 Jul , 2020
Additional External Resources
A variety of other useful resources for veterinarians and companion animal owners.
07 Jul , 2020
Clinical Consensus Statements
A list of current open-access clinical consensus statements related to companion animal infectious diseases.
16 Mar , 2020
COVID-19 Related Resources for Veterinarians – ARCHIVED 31-Dec-2021
OAHN has compiled a list of resources for veterinary staff and animal owners related to the COVID-19 pandemic.
28 Jul , 2017
Vector-Borne Diseases – Links and Resources
Resources and recent news articles related to tick- and mosquito-borne disease.
08 Oct , 2015
Disease Reporting Contact Information
A list of laboratory, provincial and federal government contacts.
Team Members
Dr. Maureen Anderson
Co-lead
OMAFRA
Dr. Emma Webster
Co-lead
Private Practitioner
Dr. Hailey Bertrand
Private Practitioner
Northern ON
Dr. Emily Brouwer
Pathologist
Animal Health Laboratory
Dr. Julie Calvert
Private Practitioner
Eastern ON
Dr. Allison Collier
Faculty Clinician
Ontario Veterinary College
Dr. Donia Eino
Private Practitioner
GTA
Dr. Kris Ruotsalo
Pathologist
Animal Health Laboratory
Dr. Scott Weese
Professor
Ontario Veterinary College
Dr. Hannah Golightly
Epidemiologist
OMAFRA
Dr. Tanya Rossi
OAHN Coordinator
Animal Health Laboratory


