The 15th Triennial Heartworm Symposium was held in New Orleans in 2016. At the symposium, Dr. Clarke Atkins, DVM, DACVIM, professor emeritus at the North Carolina State University spoke about heartworm resistance to today prophylaxis, and what the veterinary field learned about it in the last 10 to 15 years, and what remains unknown.
Dirofilaria immitis, or heartworm, is a parasite (a roundworm) that is spread from host to host by mosquitoes.
The severity of the symptoms in dogs is dependent on the number of roundworms present in the body, the duration of the infestation, and the response of the immune system of the dog.
Where Dirofilaria immitis is endemic, dogs without heartworm protection are100% likely to suffer from heartworm infestation.
Dogs have been diagnosed with heartworm disease in all 50 U.S. states.
Heartworm disease is preventable with the administration of a heartworm prophylaxis medication, as recommended by a veterinarian.
Learn more about heartworm resistance on this link: