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Dogs + Infectious Diseases

  • Roundworms (nematodes or ascarids) are parasites that live freely in the intestine, feeding off of partially digested intestinal contents.

  • Salmon poisoning is caused by a type of bacteria found within parasitic flatworms that infect the tissues of wild fish found in coastal streams of the Pacific Northwest.

  • Sarcoptic mange, also known as scabies, is caused by a parasitic mite that burrows just beneath the surface of the skin. The presence of the sarcoptic mite causes intense itching; an affected dog will constantly chew and scratch his skin. Sarcoptic mange is highly contagious to other dogs and humans.

  • H1N1 influenza virus emerged in pigs as a genetic sharing of DNA from both human and swine influenza viruses. It caused a deadly pandemic in 2009 and continues to be an important cause of illness today. Pets including cats and dogs can be infected from their owners and become ill. It is not yet known to transfer from pets to humans. Good hygiene and restricted exposure should be taken immediately if there is any sign of influenza-like infection to restrict spread between humans, and between humans and their pets or domestic animals.

  • There are several tests for diagnosing leptospirosis, but the two most common ones are the DNA-PCR test and the microscopic agglutination test (MAT). Infection can be diagnosed with either test, but each has weaknesses, and in some situations, both tests may be needed to reach a diagnosis.

  • Tetanus is a medical condition caused by a toxin. This toxin, produced by the bacteria Clostridium tetani, affects the nerves, spinal cord and brain, leading to hyperexcitability resulting in muscle spasms. Dogs are less susceptible to the effects of tetanus toxin than humans and horses. Tetanus is typically diagnosed based on exam findings. Dogs with tetanus require intensive nursing care. Most dogs develop localized, self-limiting disease, which will respond to appropriate early treatment.

  • Trifluridine is an antiviral topical medication used to treat viral infections of the eye, such as herpesvirus-1 in cats. Give as directed. Side effects include eye irritation. Do not use in pets with an allergy to this medication. If a negative reaction occurs, please call the veterinary office.

  • Tularemia is an infection of the bacteria Francisella tularensis and is most common in rabbits and rodents. Infection in dogs occurs from ingestion of an infected animal, drinking contaminated water, or getting bitten by a blood-sucking insect. Tularemia causes mild illness in healthy dogs. More severe clinical signs include enlarged lymph nodes and draining abscesses. Treatment includes antibiotics, surgical removal of any draining abscesses, and any other supportive care warranted by the dog's condition. Tularemia is a reportable zoonotic disease.

  • There are six primary reasons for vaccination failure. Vaccine inactivation is one reason and is most commonly caused by warming during shipping and handling. In addition, vaccines are not always 100% effective. Dogs may also be unhealthy or too young, leading to vaccine failure. Interference by maternal antibodies can lead to the vaccine being blocked.

  • Valley fever is an infection called Coccidioidomycosis, caused by the soil-dwelling fungus Coccidioides immitis. In the US, it is more commonly found in the southwestern states. Dogs are infected by inhaling spores released by disturbance of soil. These spores infect the lungs, forming spherules, and may migrate to different areas of the body, including the bones, joints, eyes, and rarely the brain. Dogs with weakened immune systems can become ill. Most dogs that are treated appropriately will recover from this disease.