Heartworm Resource Center

Managing Heartworm Disease in Zoo Animals

Zoo animals like marine mammals, big cats and others can become infected with heartworms. Fortunately, prevention is possible.

When a Treated Dog has Persistent Microfilaria

Dr. Tom Nelson explains the potential reasons a dog may test positive for microfilaria following heartworm treatment

Role of Antigen and Antibody Testing in Heartworm-Positive Cats

Veterinary parasitologist Dr. Lindsay Starkey outlines the role of antigen and antibody tests for heartworm screening in cats

Exercise Restriction Advice for Dogs Undergoing Heartworm Treatment

Successful treatment of dogs with heartworm infection requires keeping them quiet and calm, as Dr. Brian DiGangi explains.

How to Treat Heartworm-Positive Cats

There are no approved heartworm treatments for cats, but veterinarians do have options when managing these patients. Veterinary cardiologist Dr. Marisa Ames explains.

Why Pets Need Year-Round Heartworm Prevention

Heartworm Diagnostics: Antigen Tests Alone Aren't Enough

How reliable are patient-side heartworm antigen tests? Veterinary parasitologist Dr. Lindsay Starkey explains.

Antigen Test Timing Following Melarsomine Treatment

How long should I wait before re-testing dogs undergoing heartworm treatment? Dr. Tom Nelson explains the timing.

When Heartworm Treatment is Interrupted

When treating dogs for heartworm, what if there's a delay between giving doxycycline and melarsomine? Dr. Chris Duke explains.

Managing Dogs Treated with Non-AHS Protocols

When treating dogs for heartworm, what's the difference in efficacy between two and three injections of melarsomine? Dr. Angele Bice breaks it down.

Hit the “Reset” Button on your Client Education Program

How should I educate my clients about heartworm prevention this spring? Dr. Chris Duke shares tips.

Safe Transport of Heartworm-Positive Dogs

How can I safely transport dogs in the midst of heartworm treatment? Dr. Brian DiGangi shares the AHS/ASV recommendations.

What’s the Protocol?

Marisa Ames,DVM, DACVIM (cardiology)
Associate Professor
Colorado State University,
College Of Veterinary Medicine

Heartworm Disease Causes Lifelong Damage

Can heartworm infection cause permanent damage in dogs? The answer is yes, says Dr. Stephen Jones.

Heartworm Diagnostics: Antigen Tests Alone Aren’t Enough

How reliable are patient-side heartworm antigen tests? Veterinary parasitologist Dr. Lindsay Starkey explains.

Making the Case for Heartworm Prevention in Cats

Why is heartworm prevention important for cats? Dr. Elizabeth Clyde gives reasons.

The States of Heartworm Incidence

What does the latest AHS survey say about heartworm incidence? Dr. Chris Duke explains.

Tackling Tough Conversations

Can I cut corners on the AHS heartworm treatment protocol for dogs? AHS Past President Dr. Chris Rehm says "no."

The Wrath and Aftermath of Hurricanes

How can hurricanes lead to increases in heartworm incidence? There's a link, according to veterinary cardiologist Dr. Clarke Atkins.

The AHS Guidelines: 2018 Updates - Guidance on Prevention, Testing and Treatment

The AHS Guidelines: 2018 Updates - Guidance on Prevention, Testing and Treatment

The AHS Protocol vs. “Slow Kill”

Why does the AHS recommend against "slow kill" for heartworm treatment in dogs? Veterinary parasitologist Dr. Andy Moorhead has answers.

Why Don’t Clients Give Heartworm Preventives?

Why aren't clients always compliant in giving heartworm preventives? Dr. Stephen Jones shares his thoughts.

Is it Negative or Not? The Role of Heat Pretreatment in Heartworm Testing

What is the role of heat pretreatment in heartworm testing? Dr. Brian DiGangi explains when and why it may be needed.

Is There an Echo in Here?

How can you get veterinary clients to be compliant with heartworm prevention? Dr. Chris Dukes share his tips.

Heartworm Prevention Needed Nationwide

Why is heartworm prevention needed nationwide? Veterinary cardiologist Dr. Matt Miller explains.