NCVP - National Center for Veterinary Parasitology

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  • Home
  • Resources
    • People >
      • Directors and Advisory Board
      • Residents >
        • Boehringer Ingelheim Resident
        • Elanco Resident
        • IDEXX Resident
        • Merck Resident
        • Zoetis Resident
      • NCVP Alums
      • Clinical Parasitology Support
      • Additional Support
      • Sponsors
    • Parasite Image Database >
      • Protozoa
      • Arthropods
      • Nematodes
      • Trematodes
      • Cestodes
      • Acanthocephala
      • Tick-Borne Disease Agents
    • Case of the Month
    • Teaching and Research Materials >
      • Teaching Specimen Request
      • Parasite Jeopardy Games
      • Parasite Videos
    • Online Resources >
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      • Resources for Educators
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  • News
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    • NCVP Newsletter
  • Opportunities
    • Request for Proposals
    • Residency Application
    • Continuing Education in Parasitology
    • Positions Open in Veterinary Parasitology

Case of the Month

August 2014

 

Coyote-hunting greyhound

A greyhound in Oklahoma that is used to hunt coyotes is presented with lethargy and fever. A CBC reveals anemia. The owner provides proof of current vaccinations and states that routine flea/tick prevention is used. The referring veterinarian suspected Rocky Mountain Spotted Fever but the dog did not improve with doxycline. A photograph of the greyhound is included below. Note the suspicious fighting lesions on the face.
Picture
A blood smear was performed. The arrows are pointing to two intraerythrocytic parasites in the photomicrograph below.
Picture
What is your diagnosis?

Answer

The arrows are pointing to two small piroplasms. Most commonly Babesia gibsoni is the small piroplasm of dogs that is associated with direct transmission through fighting (particularly among fighting pit bull circles) in Oklahoma. However genetic characterization identified the parasite as Babesia conradae, a small piroplasm, morphologically indistinguishable from B. gibsoni, most commonly reported in dogs from California (and at the time of this case, had not been documented in dogs outside of California). Interestingly, the owner was quite adament that this greyhound had never been to California; The owner had purchased the dog as a young puppy from a breeder in Kansas, and the dog had since never been out of Oklahoma.


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