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Zoonotic Diseases + English

  • Ringworm infections in cats are caused by a fungus, not a worm. They can be easily recognized, though definitive testing by fungal culture is recommended. Ringworm is highly contagious and can be spread between animals and from animals to people. The clinical signs, diagnosis, treatment, and risks are explained in this handout.

  • Ringworm is a skin infection caused by a dermatophyte (skin 'loving') fungus of which there are several different species. The fungi that cause ringworm in horses include the Microsporum and Trichophyton species, that can infect not only horses but other animal species, including humans.

  • Roundworms are one of the most common intestinal parasites observed in cats. Almost all cats will become infected with roundworms at some point in their life, most often as kittens. Roundworms are not particularly harmful to adult cats, but large numbers may cause life-threatening problems in kittens and debilitated older cats. Roundworms can also be transmitted to humans. Diagnostic testing, treatment, and preventive measures are explained in this handout.

  • Roundworms are the most common gastrointestinal worm found in dogs and can also be transmitted to people. They are of most concern to puppies when present in large numbers, causing stunted growth, a pot-bellied appearance, and recurrent diarrhea. Diagnostic testing, treatment, and preventive measures are explained in this handout.

  • 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.

  • Tapeworms are parasites that infect the gastrointestinal tract of cats, other animals, and humans. Several types of tapeworms are known to infect pets, but the most common species observed in cats is Dipylidium caninum, which is transmitted through fleas. Risk factors, clinical signs, treatment, and prevention are explained in this handout. Other, less common types of tapeworms that affect cats and humans are also covered.

  • Tapeworms are parasites that infect the gastrointestinal tract of dogs, other animals, and humans. Several types of tapeworms are known to infect pets, but the most common species observed in dogs is Dipylidium caninum, which is transmitted through fleas. Risk factors, clinical signs, treatment, and prevention are explained in this handout. Other, less common types of tapeworms that affect dogs and humans are also covered.

  • 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 bacterial disease that can affect most animals and humans. Horses are particularly susceptible because of their environment and tendency to suffer injuries.