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Heartworm Incidence Maps

Tracking the impact of heartworm disease
Every three years, the American Heartworm Society (AHS) gathers data on heartworm testing to understand the impact heartworm is having nationwide, as well as in specific regions. Testing data from thousands of veterinary practices and shelters is used to create a detailed map showing the average number of heartworm-positive cases per clinic.

Changes in Heartworm Incidence Over Time

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Latest News

The Pandemic Effects on Heartworm Prevention

"At the beginning of spring 2020, many veterinarians saw a drop in wellness visits and heartworm...

Veterinary Treatment Facility reminds pet owners of heartworm disease risks

Heartworms are a serious and potentially fatal disease that mainly affects dogs, cats and ferrets....

Heartworm cases on the rise this time of year

Experts say prevention starts now Heartworm can be turn into a deadly disease if not treated...

Veterinarians need to stress year-round mosquito control

While heartworm is a serious and potentially deadly disease, it is, fortunately, also preventable...

Mosquito season is especially dangerous for pets. Here's how to keep them safe

Keeping your furry friend safe is especially key as a common pest starts to reappear along with...

PAWS AND PAGES: Heartworm Awareness Month

April is National Heartworm Awareness Month, providing the perfect opportunity to emphasize the...

April is National Heartworm Awareness Month

More than a million pets in the United States have heartworms. Let that sink in, because it is one...

Prevention is better than the cure: April is heartworm awareness month

Ruth Olsen is the Operational Manager for the Sumter Humane Society. She provides a healthy home...

Heartworms and our Pets: What YOU need to know

Did you know? It’s National Heartworm Awareness Month: Indiana continues to rank high (top 12 )...

Relocating heartworm-positive dogs in dangerous times

In a perfect world, any dog diagnosed with heartworms would undergo treatment and recovery prior...

American Heartworm Society announces new recommendations

In an ideal world, any dog diagnosed with heartworms would undergo adulticide treatment and...

Safely Transport Heartworm-Positive Dogs

Rehoming. A move. Accompanying an owner on a trip. Such situations can mean that dogs diagnosed...

Twitter: @AHS_Think12

RT @AHS_Think12: Prevention is essential. Learn how to keep your dog(s) safe. 🐶 https://t.co/ecBU0gHsPA https://t.co/M3qBHRIHqz

by Heartworm Society

RT @AHS_Think12: Is there such a thing as "natural" heartworm prevention and treatment? https://t.co/SNjbx6AzAa

by Heartworm Society

RT @AHS_Think12: Watch this entertaining TED Talk on mosquitos!! https://t.co/p3uHuE2Izj

by Heartworm Society

RT @AHS_Think12: Feline Friday! Even indoor cats need heartworm preventive year-round! Internal parasite protection protects them and your…

by Heartworm Society