
15/08/2025
*** Please review the linked article regarding Important Information about a newly identified tick-borne disease in Southern Ontario ***
Although we are a long way off from having all of the information regarding this issue, it is clear that there are a handful of confirmed cases of Rocky Mountain Spotted Fever (RMSF), and to this point the majority all seem to coincide with dogs who have a history of being in the Long Point area of Southern Ontario.
This disease is spread via Dermacentor ticks (aka: American Dog tick), which is a species very common to Ontario but formerly not in the spotlight for disease transmission in our area, until now.
What this means for dog owners is that we all need to be aware of the risk of tick-borne diseases, especially when travelling to different areas with our pets. It is best to try to avoid high risk areas of long grass or leaf litter, and ensure that your dog is on appropriate tick prevention as directed by your veterinarian. Even with tick prevention, performing regular tick checks on your dog is crucial, as some diseases can be transmitted before tick control products are effective in killing a tick on the host. If your dog has been in the Long Point area and is ill, your veterinarian will need to know the travel history.
Humans are also at significant risk from RMSF, so remember to utilize the above strategies for anyone potentially exposed to ticks, especially if you have travelled to the affected area. If you are ill, and have or had exposure to ticks, make sure to let your physician know about your travel history. As with many diseases, early detection is critical for successful treatment.
Remember, humans cannot contract RMSF directly from dogs, but a diagnosis in dogs is relevant to human health because we both become infected in the same manner - from an infected tick. Since we typically spend time outdoors with our canine companions, this means potential trouble for both species.
We are keeping our eye on this situation and will do our best to provide updates as information comes our way.
https://www.wormsandgermsblog.com/2025/07/articles/animals/dogs/rocky-mountain-spotted-fever-what-to-look-for/