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About the AHS
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General Content
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For Pet Owners
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In the News
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The American Heartworm Society is the leading resource on heartworm disease, and our mission is to lead the veterinary profession and the public in the understanding of this serious disease. Every year, hundreds of stories are written on the diagnosis, prevention and treatment of heartworm, as well as on the plight of affected pets. These stories are an important way of reaching both veterinary professionals and pet owners with information they need to know about heartworm disease.

The American Heartworm Society is led by a board of directors comprised of veterinarians and specialists in the fields of veterinary parasitology and internalmedicine. As leaders in the fight against heartworm disease, they are available as resources and authors of related stories.

Members of the media are encouraged to contact the American Heartworm Society for information, visuals and interviews about heartworm disease. Please contact Sue O’Brien at This email is for media inquiries only. All other inquiries, please email:



News & Alerts

Media Room
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Think 12
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Heartworm Heroes
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Heartworm University
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A Complete Interactive Continuing Education Program on Heartworm Disease - Hear the latest information on controversial topics such as "slow kill" and macrocyclic lactone lack of efficacy investigations. Don't miss the opportunity to hear about the latest findings and participate in this highly acclaimed, interactive and informative presentation!

Heartworm University comprises 6 hours of practical clinical information in a lively interactive format.  When Heartworm University is offered in conjunction with a state or regional meeting there is no additional charge to attend. Our expert faculty will present a comprehensive program including the latest information on heartworm disease available.  An advanced computer-interactive response system enables the presenters to address specific audience concerns. Course content features a discussion of controversial issues while integrating essential disease pathophysiology, diagnostics, screening and testing, treatment protocols, prevention strategies, and pet owner counseling.

For Veterinarians
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Clinical FAQs
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Fact Sheets
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Heartworm Images
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Incidence Maps
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Just for Kids
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Pet Owner FAQs
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Think 12 Posters
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Shelter Resources
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Slide Shows
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Triennial Symposium
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Since the establishment of the American Heartworm Society in 1974, a symposium has been held every three years for the purpose of presenting the latest research on heartworm disease, diagnosis, and prevention. Presenters at each symposium come from all over the world.

AHS Members have access to downloadable, searchable proceedings from prior years. 

To view videos from previous symposia, please see our YouTube Account. 

Triennial Symposium Videos on YouTube


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Join AHS

Join the leading association on Heartworm education and prevention today!

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Membership Details

The days are getting shorter, the nights are cooler, leaves are starting to turn, and football season is here. But that doesn’t mean your clients can forget about protecting their pets from heartworms.

To keep this message front and center with your clients, we’re sharing a set of new posters you can print OR post on your Facebook or Instagram page.

  • To save or print a poster, just click on the image below, then click on the “download” button and save the PDF file.
  • To save a poster for use on your social pages, simply open the downloaded poster, then right click on the file and follow the menu instructions to save the file as a JPEG image.

For more client tools, be sure to visit the Resource Center. And if you don’t already, make sure you’re sharing our Facebook and Instagram posts!