</s> ▁B ov ine ▁al ph ah er pes vir us ▁ 5 ▁( Bo H V - 5 ) ▁is ▁a ▁virus ▁species ▁of ▁the ▁genus ▁Var ic ello vir us ▁and ▁sub family ▁Al ph ah er pes vir inae . ▁It ▁causes ▁men ingo ence phal itis ▁and ▁resp ir atory ▁disease ▁in ▁cattle ▁and ▁sheep . ▁As ▁with ▁all ▁her pes ▁vir uses ▁lat ent ▁in fection ▁can ▁occur , ▁with ▁rec r udes c ence ▁ ▁at ▁times ▁of ▁str essed ▁and / or ▁imm unos upp ression . ▁S ites ▁of ▁laten cy ▁include ▁the ▁C NS ▁and ▁m uc osa e ▁of ▁the ▁nose ▁and ▁tra che a . ▁The ▁disease ▁has ▁been ▁documented ▁in ▁South ▁America , ▁the ▁United ▁States , ▁Australia , ▁Germany ▁and ▁Hung ary . ▁C aused ▁by : ▁B H V - 5 ▁— ▁B ov ine ▁En ce phal itis ▁Vir us ▁— ▁B ov ine ▁En ce phal itis ▁Her pes vir us ▁ ▁D ise ase ▁is ▁most ▁common ▁in ▁cal ves ▁up ▁to ▁ten ▁months ▁of ▁age . ▁ ▁C lin ical ▁signs ▁and ▁diagn osis ▁ ▁Sign s ▁of ▁resp ir atory ▁disease ▁include ▁t ach y card ia ▁and ▁t ach yp nea ▁with ▁py re x ia , ▁d ys p nea , ▁mu co id ▁nas al ▁dis charge , ▁hyp ers al iv ation ▁and ▁ab normal ▁lung ▁sounds . ▁System ic ▁signs ▁such ▁as ▁le th arg y ▁and ▁an ore