Dog heartworm is a very common disease of canines and to a lesser extent cats caused by a parasitic worm (Dirofilaria immitis) that can be debilitating, even fatal. Dog heartworm is transmitted to dogs by the bite of an infected mosquito. Adults live in the dog’s heart and release microscopic young worms into the dog’s blood. This infection is often fatal to the dog. Cats are also susceptible to infection by dog heartworm, although to a much lesser degree than are dogs. Human infections are sometimes discovered, usually during lung X-rays. Pet owners should talk to their veterinarians about protective medication to avoid dog heartworm. For more information and content source: http://edis.ifas.ufl.edu/MG100 and www.heartwormsociety.org.
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