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Summary
Equine herpesvirus 1 (EHV1) and equine herpesvirus 4 (EHV4) are important ubiquitous equine pathogens, causing much damage to the viral horse industry. EHV1 strains are associated with respiratory disease, abortion, and paresis/paralysis, whereas EHV4 strains are predominantly associated with respiratory disease. In the past decades much research effort has been put into improving knowledge about these viruses.
In this paper the current state of knowledge of these viruses and the most important aspects of these virus infections, e.g. epidemiology, clinical aspects, pathogenesis and pathology, immunity, diagnosis, preventive management and management in the course of an outbreak and vaccination, is reviewed. Because we performed some research ourselves in the areas of diagnosis, epidemiology and vaccinology these aspects are reviewed in more depth than the other aspects. Still many questions have remained and new questions have risen. Consequently, research priorities should be made in an attempt to answer these questions. Therefore, this review ends with some personal recommendations for important priorities for future research.
Notes
Animal Health Service, P.O. Box 9, 7400 AA Deventer, The Netherlands. E‐mail: c.v.maanenagdvdieren.nl