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J Vet Diagn Invest. 2001 May;13(3):249-51.

Validation of a competitive enzyme-linked immunosorbent assay for diagnosing Babesia equi infections of Moroccan origin and its use in determining the seroprevalence of B. equi in Morocco.

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  • 1Department de Parasitologie, Institut Agronomique et Veterinaire Hassan II, Rabat-Instituts, Morocco.


A highly specific and sensitive competitive enzyme-linked immunosorbent assay for detection of specific antibody to Babesia equi in serum from equids was validated for use in Morocco. The assay is based on the specific inhibition of binding of a monoclonal antibody to a conserved epitope within a recombinant parasite peptide by serum from infected animals. The assay was compared to an established indirect immunofluorescence assay, with a concordance of 91%. The assay was used to determine seroprevalence for B. equi infections in donkeys and horses throughout Morocco. A total of 578 sera (163 horses and 415 donkeys) from 6 locations representing different bioclimatic regions were assayed. An analysis of variance, indicated no significant effect of location; however, donkeys were significantly more likely than horses to be seropositive. Management conditions contribute to greater tick infestations and thus Babesia exposure in donkeys than in horses.

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