An expert in hepatitis delta virus said Vir Biotechnology Inc.’s phase II findings with the monoclonal antibody tobevibart and the small interfering ribonucleic acid elebsiran in chronic disease could lead to a “change [in] the entire care cascade and paradigm.” Shares of Vir (NASDAQ:VIR) ended June 5 at $12.66, up $2.08, or 19.7%, on the clinical news.