Inkastoo daahfurkan, dadaallada cilmi-baarista ee caalamiga ah ee lagu ogaanayo fayraska, oo markii hore loo yaqaanay non-A, non-B hepatitis (NANBH), ayaa fashilmay tobankii sano ee xigay. Sanadkii 1987, Michael Houghton, Qui-Lim Choo, iyo George Kuo oo ka tirsan Shirkadda Chiron Corporation, oo la shaqeynayay Daniel W. Bradley oo ka tirsan Xarumaha Xakamaynta iyo Kahortagga Cudurrada, ayaa adeegsaday hab cusub oo molikal ah oo loo yaqaan'molecular cloning' si loo aqoonsado noolaha aan la aqoon iyo baaritaan lagu ogaanayo. Sanadkii 1970 waxaa xaqiijiyay jiritaanka fayraska iyada oo la hubinayo jiritaanka NANBH.
1987 waxaa