HEARTWORMS
Heartworm Disease: A Deadly but Preventable Condition
Heartworm is a serious, potentially fatal parasite that infects dogs, cats, and ferrets. It is transmitted only through mosquito bites. Once inside an animal, heartworm larvae mature over six months, damaging the heart and lungs, leading to heartworm disease. Adult worms can live 5-7 years in dogs and several months to years in cats.
Which Pets Should Be Tested for Heartworm?
- All dogs should be tested annually for heartworm.
- Cats should be tested before starting heartworm prevention and as recommended by a veterinarian.
- Even pets that rarely go outside are at risk.
Treatment for Heartworm Disease
- Dogs: Treatment is available but involves risks. The goal is to kill adult worms and microfilariae safely.
Affected dogs must rest completely during treatment. - Cats: There is no effective heartworm treatment for cats. Instead, medications may be used to manage symptoms, or surgery may be an option.
Preventing Heartworm Disease
- Heartworm prevention is nearly 100% effective when given regularly. Several FDA-approved options exist, including monthly chewables and injections.
- Pets should be tested before starting prevention. A follow-up test should be done six months later and annually thereafter.
- Even pets on year-round prevention should be tested regularly, as infections have been reported despite treatment.