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Infectious Diseases

  • This handout outlines common internal parasites in cats. Included are parasites of the gastrointestinal tract (roundworms, hookworms, and tapeworms), as well as parasites of the circulatory system (heartworms). How each of these parasites can affect your cat and what you can do to prevent or treat infection are explained.

  • This handout outlines internal parasites in dogs. Included are parasites of the gastrointestinal tract (roundworms, hookworms, whipworms, and tapeworms), as well as parasites of the circulatory system (heartworm). How each of these parasites can affect your dog and what you can do to prevent or treat infection are all explained.

  • Ivermectin + pyrantel is a heartworm disease preventive that treats and controls hookworms and roundworms in dogs. Ivermectin + pyrantel is given by mouth as a flavored chew tablet. At prescribed doses, ivermectin + pyrantel is well-tolerated. Some dog breeds (e.g., collies, sheepdogs, and collie- or sheepdog-cross breeds) are more sensitive to ivermectin than others; your veterinarian will advise you on the safety of using this medication in your dog. If you suspect an overdose or an adverse reaction to the medication, call your veterinary office immediately.

  • Leishmaniasis is a disease caused by a protozoan parasite transmitted by sandflies and is most commonly seen in the Mediterranean, Middle East, and South and Central America. It has been reported in some parts of the United States. Clinical signs include hard skin nodules, weakness, decreased appetite, vomiting, diarrhea, and more. Diagnosis is based on travel history, clinical signs, and diagnostic testing. The goal of treatment is to resolve clinical signs. Prognosis is guarded to grave depending on the severity of the disease.

  • Leptospirosis is a bacterial disease of dogs and other mammals that primarily affects the liver or kidneys. The bacteria (Leptospira) that cause leptospirosis thrive in water. Infected or recovered carrier dogs may act as a source of the infection. Antibiotics such as penicillin, ampicillin, and amoxicillin are reasonably effective against the acute stages of leptospirosis, if started early, although most affected dogs require intensive care in the veterinary hospital. This disease can be transmitted to humans.

  • In North America, many parasitic lungworms infect cats. Cats can become infected by swallowing infective stages of parasitic lungworm. The exact means of becoming infected varies according to the life cycle of the particular parasite. Signs can include coughing, heavy breathing, wheezing, sneezing, poor appetite or anorexia, weight loss, fever, enlarged lymph nodes, and ocular or nasal discharge, and may be more prominent in kittens due to their immature immune systems. Although the success rate of treatment depends on the severity of symptoms and the number of parasites present, the prognosis for recovery is generally good.

  • The bacterium that causes Lyme disease can be transmitted to dogs through the bite of an infected tick, most commonly the deer tick (black-legged tick), which is found in the midwestern and eastern United States and throughout Canada. The disease typically causes pain and swelling in the affected dog's joints along with decreased appetite and fever. The kidneys are sometimes affected, in which case the disease is often fatal. Diagnostic testing, treatment, and ways to prevent Lyme disease in your dog, including instructions for tick removal, are explained in this handout.

  • Melioidosis is a bacterial infection that is typically associated with tropical regions. The bacteria that causes melioidosis, Burkholderia pseudomallei, is usually found in soil and water. The clinical signs of this condition, along with transmission, diagnosis, treatment, and prognosis, are outlined in this handout.

  • Distemper in Dogs

    El moquillo es una enfermedad vírica altamente contagiosa que afecta a los perros domésticos. Otras especies como hurones, mapaches y mofetas también se ven afectadas por esta enfermedad.

  • Parvovirus may affect dogs of all ages but is most common in unvaccinated dogs less than one year of age. Young puppies under five months of age are usually the most severely affected and difficult to treat. Clinical signs can vary but generally include severe vomiting and diarrhea; the diarrhea often has a powerful smell, may contain lots of mucus, and may or may not contain blood. Most dogs with CPV infection recover if aggressive treatment is used and if therapy is started before severe septicemia and dehydration occur.