- EHV-5 has
so far only been isolated from horses in Australia,
New Zealand, Germany and Switzerland. It has not
been isolated in horses from Canada.
- There has been no shown association
between the presence of EHV-5 and clinical disease, and is found in the
passages of both healthy horses and those with clinical respiratory
- EHV-2 and EHV-5 have a high degree of similarity in their protein
making serological differentiation difficult. In most cases, PCR must
to differentiate between the presence of the two viruses.