Table 1. Overview of clinical signs and histopathological findings in the affected horses.

Number	Breed	Age	Sex	Clinical signs	npE	npG	JD IB	IHC (BoDV)
1 011407/15	Austrian warm blood	6 y	Mare	Constipation, colic, proprioception disturbances, circular movement, ataxia, disorientation.	+++	+	(+)	+++
2 018072/15	Shetland pony	3 y	Mare	Depression, empty chewing/pipe smoking, proprioception disturbances, circular movement, ataxia, stringhalt.	++	++	++	+++
3 134407/16	Noriker	6 y	Mare	Apathy, depression, pipe smoking, swallowing disorders.	++	+	+++	+++
4 135391/16	Trotter	10 y	Gelding	Initially fever (39.7 °C), loss of appetite, somnolence, ataxia, dyspnea, compulsive walking.	+++	+++	++	+++

Abbreviations: BoDV, Borna disease virus; IHC, immunohistochemistry; JD IB, Joest Degen inclusion bodies; npE, nonpurulent encephalitis; npG, nonpurulent ganglionitis; y, year; (+), single, +, mild, ++, moderate, +++, severe.