In blood samples of seven captive equid species from four German toes EHV-1
specific antibodies were detected in 76% and EHV-4 specific antibodies in
73% of the 55 animals, whereas 93% were tested positive for EHV-2 and EHV-5
, respectively. In only one blood sample from a Przewalski's wild horse EHV
-4 DNA was amplified by PCR. From seven Przewalski's wild horses EHV-2, and
from another one EHV-5 was isolated by cocultivation. The identity of the
virus isolates was verified by PCR and restriction enzyme digestion.