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Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
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Tick-Borne Relapsing Fever in Dogs.

J Piccione1, G J Levine2, C A Duff3

  • 1Texas A&M Veterinary Medical Diagnostic Laboratory, Texas A&M University, College Station, TX.

Journal of Veterinary Internal Medicine
|June 30, 2016
PubMed
Summary
This summary is machine-generated.

Tick-Borne Relapsing Fever (TBRF) in dogs, caused by Borrelia bacteria, is often underdiagnosed. Prompt diagnosis via blood smear and treatment with tetracyclines can resolve symptoms like fever and thrombocytopenia.

Keywords:
BacteremiaBorreliaSpirocheteSpirochetemiaThrombocytopenia

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Area of Science:

  • Veterinary Medicine
  • Infectious Diseases
  • Parasitology

Background:

  • Tick-Borne Relapsing Fever (TBRF) in dogs is caused by Borrelia turicatae and Borrelia hermsii, transmitted by Ornithodoros ticks.
  • Diagnosis is typically confirmed by observing spirochetes in blood smears, though the course of infection remains incompletely understood.

Observation:

  • A case series reviewed five naturally infected dogs in Texas presenting with lethargy, inappetence, pyrexia, and thrombocytopenia.
  • Two dogs exhibited neurological signs; all cases showed spirochetemia.

Findings:

  • Oral tetracycline administration led to resolution of fever and spirochetemia, along with improved platelet counts in four out of five dogs.
  • The study highlights the effectiveness of tetracyclines in treating TBRF in canine patients.

Implications:

  • TBRF may be underdiagnosed in veterinary settings, particularly in regions endemic for Ornithodoros ticks.
  • Considering TBRF in dogs with thrombocytopenia and utilizing blood smear examination for rapid diagnosis are crucial for effective management.