08/04/2025
📣 Heartworm Alert: About 1 in 500 dogs in SLO County tests positive for heartworms
We’re seeing more heartworm infections locally, which is a serious concern. They are transmitted through mosquitos. While heartworm used to be uncommon here, recent trends show notable increases even in areas that were previously low-risk.
⚠️ Why should you worry?
Heartworm is caused by the parasite Dirofilaria immitis, which lodges in your dog’s heart and lungs. Pets may appear symptom‑free for months—but over time worms damage organ tissues, leading to persistent cough, exercise intolerance, weight loss, and in severe cases, congestive heart failure or death.
💉 Treatment is painful and costly.
Treating a dog with heartworm involves bloodwork, chest X‑rays, and injections. The protocol is intense—your dog must stay quiet for weeks to avoid complications, recovery can be painful, and the overall cost can reach hundreds to over a thousand dollars depending on severity.
💡 Preventive care costs a fraction of treatment.
Heartworm preventives such as Simparica Trio reduce risk by over 99% when given reliably. Prevention is not only easier—it’s vastly more affordable than treating an infection down the line.
✔️ What you can do:
- Schedule an annual heartworm test—even for dogs on prevention year-round
- Stick to a monthly preventive regimen consistently
- Avoid mosquito exposure by eliminating standing water around your yard
At Mission Animal Hospital, we’re dedicated to keeping your dog safe, healthy, and happy. ❤️🐾