Heartworm is found in pets all over the United States. It is a serious disease where spaghetti  like parasites begin to live in the blood vessels and the heart of a pet. No heart worm is treatable so you have to prevent it in the first place. John Rosh is a professor at the Tufts Coming School of Veterinary Medicine. He says that in certain parts of the country heart worm is a common cause for pulmonary hypertension as well as heart failure and other problems. This disease must be prevented especially in areas of the country where it is more common.  Your veterinary can provide you with information about the disease and give you preventative pet medication. Again, there is no cure for this disease so it must be prevented. Take the steps now to talk to your vet.