At the 2007 American Heartworm Society symposium, held in conjunction with the American Veterinary Medical Association meeting
in July, speakers from all over the world presented their latest research findings. Wolbachia species and its association with heartworm disease were discussed in detail, with suggestions of treatment with tetracycline
while research continues. Feline heartworm disease was highlighted, with researchers showing that heartworms in cats do not
need to reach maturity to cause airway and arterial disease.
Sheldon Rubin, DVM, is the president of the American Heartworm Society and chief of staff emeritus of Blum Animal Hospital
An interesting discussion occurred during the symposium regarding dogs from Hurricane-Katrina-ravaged areas relocated throughout
the United States causing reservoirs of heartworm disease in areas that have had a low incidence of disease in the past. In
addition, potential heartworm preventive failures were discussed with some eye-opening results. The papers from the 2007 American
Heartworm Society symposium will be published in the spring in Veterinary Parasitology.
Unfortunately, heartworm disease is spreading. In a 2004 national heartworm survey, 250,000 heartworm cases were reported
throughout the United States.* Although the number of clinics responding was significant, it is estimated that the number
of dogs with heartworm disease is probably closer to 500,000.
Is heartworm disease one of your differential diagnoses in dogs that are presented for evaluation of coughing or that have
loss of stamina? What about a cat that has a history of bronchitis or asthma or may be vomiting and losing weight—Is heartworm
disease part of your thinking? If you diagnose heartworm disease, how are you treating it? Do you treat it the way you did
10 years ago? What about monthly prevention? Do you discuss and recommend year-round preventives to help control parasitic
disease as well as to increase client compliance?
Your clients are demanding the best medical care for their pets. Although the eradication of heartworm disease is not on the
horizon, the American Heartworm Society wants to be sure that every veterinarian follows its gold standard protocol for preventing
and treating heartworm disease in dogs and cats. To update your skills, visit our Web site at
And while you're on the American Heartworm Society site, join this one-of-a-kind organization of practitioners and researchers
seeking to further research into the causes, diagnosis, treatment, and prevention of heartworm disease. Be a leader in heartworm
disease prevention in your area, and give your clients what they are seeking—the best veterinary care available.
*The results of this survey are available at http://