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Infectious Diseases

  • Giardiasis is an intestinal infection in humans and animals, caused by a microscopic protozoan parasite. The parasite occurs worldwide and is a common cause of "Traveler's Diarrhea" in people. Outdoor enthusiasts who inadvertently consume contaminated water may develop "beaver fever", which is another name for giardiasis in people.

  • Heartworms are a blood-borne parasite called Dirofilaria immitis that reside in the heart or adjacent large blood vessels of infected animals. Recent studies of cats with heart and respiratory diseases have found an incidence of heartworms that is far greater than previously thought. Veterinarians now strongly recommend that all cats receive year-round monthly heartworm preventives in areas where mosquitoes are active all year round.

  • Heartworm disease is a serious and potentially fatal disease. It is caused by a blood-borne parasite known as Dirofilaria immitis. Adult heartworms may live up to five years and, during this time, the female produces millions of offspring called microfilaria. You can prevent your dog from getting heartworms by using a heartworm preventive.

  • Hepatozoonosis is a disease caused by a protozoan (a small, microscopic organism) known as Hepatozoon. There are two species that cause hepatozoonosis, Hepatozoon canis and H. americanum, and there are differences in the course of disease and treatment depending on which species is the cause of the disease. Both species are spread by ticks; the most effective method to prevent hepatozoonosis is the regular use of an effective tick prevention.

  • Canine herpesvirus or canine herpes is a systemic, often fatal disease of puppies caused by canine herpes virus. It may remain latent in tissues after a dog is infected and may be passed on to other dogs, particularly to fetuses developing in the mother's uterus. Clinical signs in puppies include difficulty breathing, nasal discharge, anorexia, soft stools, crying, seizures, and sudden death. Symptoms in adult dogs include coughing and sneezing, miscarriage, lesions on the external genitalia, conjunctivitis, and corneal ulcers. Disease may be prevented by avoiding contact with infected dogs. Pregnant dogs should be isolated to prevent infection.

  • Histoplasmosis is a chronic, non-contagious fungal infection caused by the soil-dwelling fungus Histoplasma capsulatum. Histoplasma capsulatum is found globally and may infect both humans and animals. However, histoplasmosis is uncommon to rare in all but dogs and cats.

  • Hookworms are intestinal parasites of the cat and dog. Their name is derived from the hook-like mouthparts they use to anchor themselves to the lining of the intestinal wall. In general, cats tend to harbor relatively few hookworms when compared to the large numbers found in dogs.

  • Hookworms are intestinal parasites of the cat and dog that get their name from the hook-like mouthparts they use to anchor themselves to the lining of the intestinal wall. A large number of hookworms can cause inflammation in the dog’s intestine as well as a life-threatening decrease in the number of red bloods cells, which is called anemia. This problem is most common in puppies, but can occur in adult dogs.

  • Hepatitis is defined as inflammation of the liver. As a specific disease, infectious canine hepatitis (ICH) is a viral infection. The hepatitis virus is present in the urine, as well as in the nose and eye discharges of infected animals and the virus is transmitted by direct contact with these infected materials. In the mild form the dog may merely have a decreased appetite, appear depressed, and have a mild fever. Treatment is aimed at reducing symptoms and giving time for the dog's immune system to respond. Vaccination has been very successful at reducing the prevalence of this disease.

  • Inflammation of the inner ear is called otitis interna, and it is most often caused by an infection. The infectious agent is most commonly bacterial, although yeast and fungus can also be implicated in an inner ear infection.

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