SAEVA Proceedings 2016 | Page 262

  mares, which may indirectly result in abortions. This could in part, prevent EEVrelated equine abortions. Furthermore, vaccine-induced immunity may prevent EEV from advancing to placental transmission resulting in the direct infection and death of the foetus as observed for Mare B and Mare C in this study (Table 2) Table 2 Real time PCR results of mare and aborted foal samples tested with the EEV-VP7 primer set Blood + EEV PCR (EEV-VP7 primer set) Placenta Lung Heart Spleen + - Stud B Stud B + + Stud A Stud A + 06/05/2013 16/05/2013 Animal name Mare A Foal A Owner/ area Stud A Stud A 16/05/2013 16/05/2013 Mare B Foal B 13/06/2013 13/06/2013 Mare C Foal C Date * + NA* + + + + + Result not available (NA) Table 3 PCR and serology results for mare and aborted foal samples screened for African Horse Sickness (AHS), Equine Herpes Virus (EHV) 1 & 4, and West Nile Virus (WNV). - 13/06/13 13/06/2013 Mare C Foal C Stud A Stud A - * - NA * - - - - - - - - - Serum Stud B Stud B - Heart Mare B Foal B - - Spleen 16/05/13 16/05/13 - - Lung - Placenta - Blood Stud A Stud A WNV IgM EHV 1 & 4 PCR Heart Mare A Foal A 13/05/13 Spleen Placenta Owner/ area Blood Animal name Date Lung AHSV PCR - NA - - - - Result not available (NA) Proceedings  of  the  South  African  Equine  Veterinary  Association  Congress  2016   261