https://www.firstthings.com/web-exclusives/2020/12/the-covid-vaccine-and-the-pro-life-movement

I am firmly opposed to abortion and deeply committed to protecting the inherent and equal dignity of every human being from conception to natural death. But I do not believe that it is morally wrong to use vaccines (or other medical treatments) created using HEK 293 or other cell lines derived long ago from the tissue of aborted fetuses.