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Different Babesia canis isolates, different diseases

T P Schetters1, K Moubri, E Précigout

  • 1Department of Parasitology, Intervet International BV, Boxmeer, The Netherlands. parasitology@intervet.akzo.nl

Parasitology
|November 22, 1997
PubMed
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Babesia canis and Babesia rossi isolates from different regions cause distinct canine babesiosis pathologies. Understanding these differences is crucial for developing effective vaccines against canine babesiosis.

Area of Science:

  • Veterinary Parasitology
  • Immunology
  • Canine Infectious Diseases

Background:

  • Babesia parasites cause canine babesiosis, a significant veterinary concern.
  • Geographically distinct isolates of Babesia canis (B.c. canis) and Babesia rossi (B.c. rossi) exhibit varying characteristics.
  • Previous studies suggest differences in host-parasite interactions and disease presentation.

Purpose of the Study:

  • To investigate and compare the pathological manifestations and immunological characteristics of geographically distinct Babesia isolates in dogs.
  • To determine if isolate-specific antigens on infected erythrocytes correlate with disease presentation.
  • To assess the potential implications for vaccine development against canine babesiosis.

Main Methods:

  • Surface immunofluorescence was used to detect isolate-specific antigens on infected erythrocytes.

Related Experiment Videos

  • Differential reactivity of isolates with Plasmagel was assessed for purification efficiency.
  • Experimental infections were conducted in dogs using European (B.c. canis) and South African (B.c. rossi) isolates.
  • Parasitaemia levels, packed cell volume (PCV), and coagulation parameters were monitored.
  • Clinical signs and pathology were evaluated in experimentally infected dogs.

    • Main Results:

    • Isolate-specific antigens were detected on infected erythrocytes.
    • European isolates (B.c. canis) were effectively purified using Plasmagel, unlike South African isolates (B.c. rossi).
    • European isolate infection resulted in low parasitaemia (<1%), low PCV, and coagulation system effects.
    • South African isolate infection led to high parasitaemia (>1%), requiring chemotherapy, with disease correlated to parasitaemia.
    • Distinct pathologies were observed between European and South African Babesia isolates in dogs.

    Conclusions:

    • The etiology of canine babesiosis differs significantly between European (B.c. canis) and South African (B.c. rossi) isolates.
    • Disease presentation and severity are influenced by the geographic origin of the Babesia isolate.
    • These findings highlight the need for geographically tailored vaccine strategies for effective canine babesiosis control.