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