Biotech Stock Roundup: Regulatory Updates From NVAX, BBIO Down on Drug Failure & More Posted byZacks Equity Research December 29, 2021 Leave a comment on Biotech Stock Roundup: Regulatory Updates From NVAX, BBIO Down on Drug Failure & More Regulatory and other pipeline updates from NVAX and BBIO are among a few key highlights from the biotech sector during the past week.