I had no idea this was a real thing! I was looking on some crunchy food blog about something related to babies, and someone in a comment mentioned that "vaccines are made from babies." It sounded outrageous to me, so I googled it and ended up in a rabbit hole, turns out what the commenter said ("vaccines are from fetuses") is totally untrue, but the first vaccines were cultured on the cells from fetuses that were aborted electively. Of course now they just keep culturing the cells from the old ones.

Here's a source: http://www.chop.edu/service/vaccine-education-center/vaccine-safety/vaccine-ingredients/fetal-tissues.html

Here's the official statement from the Vatican: http://www.catholicculture.org/culture/library/view.cfm?recnum=6942

...basically they said to use alternatives when available.

Were you aware of this? If you are pro-life, does it affect your stance on vaccines?

FWIW, it doesn't affect my pro-vax perspective, although I do think it is interesting how often we take medicine for granted without realizing the complex history behind it!