Educational Articles

Infectious Diseases

  • Chagas disease, also known as American Trypanosomiasis, is an infection that is primarily observed in Latin America. In recent years, however, this infection has been observed at various sites in the Southern United States. Chagas disease is spread by the bite of certain insects, including the Mexican Kissing Beetle and other related insects. The clinical signs of Chagas disease are variable and non-specific. There is currently no consensus on the best method of treatment for Chagas disease.

  • Cheyletiellosis is an uncommon but highly contagious skin parasite of dogs, cats and rabbits caused by Cheyletiella spp. mites. It is also referred to as "walking dandruff" due to the appearance of the large, whitish mites as they crawl across skin and fur, and the excessive scaling that accompanies the infection.

  • Chlamydial conjunctivitis in cats is an infection caused by a bacterial organism. The most common signs of chlamydia in cats involve the eyes or the upper respiratory tract (nose or throat), and only when infection is not treated does it spread to the lungs. In cats with conjunctivitis, the conjunctiva becomes swollen and red. Chlamydia is spread by close or direct contact with an infected cat, so all cats in the home can become infected. Chlamydia can be successfully treated with a course of oral and topical antibiotics.

  • Chlamydophilosis, also called "psittacosis", chlamydiosis or "Parrot Fever", is a reasonably common disease of birds. It can occur in any bird but is especially common in cockatiels, Amazon parrots and budgerigars (often referred to incorrectly as parakeets.)

  • When clinical signs of upper respiratory tract inflammation, such as sneezing or nasal and eye discharge, persist over weeks or months, or when they tend to recur at intervals of a few weeks, the condition is referred to as chronic upper respiratory tract disease. A runny or stuffed-up nose is the most common clinical sign in cats with chronic infections. There are many causes of this relatively common problem in cats. The treatment will be determined by the test results and diagnosis.

  • Coccidiosis is an intestinal tract infection caused by a one-celled organism or protozoa called coccidia. Coccidia are microscopic parasites that live within cells of the intestinal lining. Kittens are commonly diagnosed with coccidiosis. The most common drug used to treat coccidiosis is a sulfa-class antibiotic, sulfadimethoxine.

  • Coccidiosis is an intestinal tract infection caused by a single-celled organism (protozoa) called coccidia. Most infections in dogs are not associated with any detectable clinical signs. Most cases of coccidiosis are self-limiting and require little medical intervention. The most common drug used to eliminate coccidia is a sulfa-type antibiotic, sulfadimethoxine.

  • Conjunctivitis is the medical term used to describe inflammation of the tissues surrounding the eye. Feline herpesvirus conjunctivitis a form of primary conjunctivitis caused by the highly infectious feline herpesvirus (FHV-1).

  • Coronavirus disease is an intestinal infection in dogs that is usually short-lived, but may cause considerable abdominal discomfort for a few days. The cause is a virus of the Coronavirus family.

  • Crop infections are common in pet birds, especially baby birds that are being hand fed. While not usually fatal if treated early, crop infections can be serious and result in a complete loss of appetite.