"Arthur Caplan, a bioethicist at the New York University School of Medicine, counters: "There are better ways to win the abortion wars than telling people not to use a vaccine. These are long-over abortions. These cells are decades old, and even major religious leaders like the pope have acknowledged that for the greater good it's not worth the symbolism to put the community at risk." * The Vatican's Pontifical Academy for Life declared in 2005 and reaffirmed in 2017 that in the absence of alternatives, Catholics could, in good conscience, receive vaccines made using historical human fetal cell lines."