A field study involving 309 horses was undertaken in the provinces of Arsi and Bale in the Ethiopian highlands to investigate the prevalence of Trypanosoma equiperdum infections using enzyme linked immunosorbent assays (ELISAs) for the detection of both trypanosomal antigen and antibody. Adult horses of both sexes were examined for clinical signs of T. equiperdum infection and serum samples were collected for the assays. One hundred and one horses showed the presence of trypanosomal antibodies in their serum and 70 animals showed typical clinical signs of dourine. Nineteen horses showed the presence of trypanosomal antigen. Eight horses were positive for both T. equiperdum antibody and antigen. Blood and genital washes from seven antigenaemic horses were inoculated into mice and rabbits in an attempt to isolate trypanosomes but none became infected.
Statistical analysis of the results of the antibody assays indicated that there were significant differences in the distribution of serologically positive horses in the different clinical groupings, with seroprevalence increasing with the severity of the observed clinical signs (P
Alemu, T.; Luckis, A.G.; Phipps, L.P.; Reid, S.W.J.; Holmes, P.H. The use of enzyme linked immunosorbent assays to investigate the prevalence of Trypanosoma equiperdum in Ethiopian horses. Veterinary Parasitology (1997) 71 (4) 239-250. [DOI: 10.1016/S0304-4017(96)01139-9]