▁B L V ▁is ▁important . ▁One ▁can ▁use ▁the ▁experience ▁with ▁B L V ▁for ▁understanding ▁HT L V - I ▁induced ▁dise ases ▁like ▁A TL ▁( ad ult ▁T - cell ▁le uk emia ) ▁and ▁H AM / T SP ▁( HT L V - 1 - associ ated ▁my el op ath y / T rop ical ▁sp astic ▁par ap ares is )- like ▁ne uro log ical ▁dis orders . ▁A ▁number ▁of ▁case - control ▁studies ▁have ▁been ▁conducted , ▁but ▁research ▁into ▁B L V - related ▁dise ases ▁has ▁not ▁been ▁as ▁extensive ▁as ▁that ▁conducted ▁into ▁other ▁vir al ▁dise ases . ▁ ▁C attle ▁v acc ine ▁Research ers ▁have ▁been ▁working ▁on ▁developing ▁an ▁at ten u ated ▁prov irus ▁v acc ine ▁for ▁b ov ines . ▁The ▁theory ▁is ▁to ▁create ▁a ▁prov irus ▁with ▁a ▁delet ion ▁in ▁the ▁path ogen ic ▁gene ▁that ▁conf ers ▁on c ogen esis ▁( tax ). ▁This ▁v acc ine ▁would ▁be ▁able ▁to ▁indu ce ▁a ▁persistent ▁anti - BL V ▁imm une ▁response ▁through ▁maintain ing ▁a ▁low ▁level ▁of ▁inf ect ivity , ▁while ▁prevent ing ▁the ▁risk ▁of ▁in fection ▁by ▁the ▁wild - type ▁virus ▁which ▁maintain s ▁the ▁ability ▁to ▁drive ▁on c ogen esis . ▁However , ▁attempts ▁thus ▁far ▁have ▁not ▁been ▁able ▁to ▁create ▁a ▁v acc ine ▁that ▁is ▁easily ▁transm itted ▁from ▁mother ▁to ▁off spring . ▁ ▁See