Neither live nor dead. It’s (supposedly) three spike-protein molecules bound together to look vaguely virus-like, and provoke an immune response. It’s (supposedly) formed in a bioreactor using cell-lines derived from an insect. It (supposedly) has no genetic material in it. It (supposedly) was not developed, tested, or produced using any cell lines derived from killed human babies. It’s (supposedly) the same technology as the annual influenza vaccines that have been offered for decades.
Yes, there’s a lot of “supposedly” in there.
They did do confirmation/eficacy testing using one of the aborted fetal cell lines, so the did “go there”.