Quote:There are no slight heartworm infections. Its really a case of the cure being almost worse than the disease. Once the baby worms (microfilaria) are dead the injected medication kills the adult worms. However, the reason for keeping them quiet is that if the dead worms break loose before the white blood cells have a chance to absorb them they can cause pulmonary embolisms and the dog keels over dead. This would be a bad outcome.
I wasn't being serious about infecting a bunch of dogs with heartworm. I like dogs.