«Dogs are infected with heartworms by mosquitoes, but it takes a long time for heartworm larvae to mature into adult, reproducing worms that can strangle the heart,» says Jennifer Miller, President of FOTAS, «so heartworm disease in a healthy, young dog is treatable with a course of antibiotics, which weakens any maturing worms, followed by
monthly heartworm prevention medicine, like Heartguard, which every dog in the South should be on anyway.»
Perhaps the biggest contribution of the discovery of avermectins in veterinary
medicine is the
prevention of
heartworm disease, which is nearly 100 % preventable with
monthly micro-doses of these compounds available in any number of commercial products.