Most veterinarians now conduct two tests, one to detect microfilariae and one to ascertain if non-reproducing adult worms are already present in the lungs. If the test is negative, daily and monthly preventive tablets are available, some with agents to handle whipworms and hookworms. Many dog owners use heartworm preventive all year, especially if they are also fighting infestations of other worms. Prevention is not cheap, but it is far less expensive than treatment and it is far easier on Fido's system and quality of life. Although uncommon, tuberculosis does affect dogs and can cause upper respiratory symptoms.
Diagnosis is by x-ray of the lungs.
Dogs and humans can infect each other with tuberculosis. The symptoms of several fungus diseases resemble those of tuberculosis. Coccidiosis is a protzoan disease with symptoms that resemble distemper. It is most common in dirty kennels. Cleanliness is the best antidote.