The 2005 declaration urged parents to ask their physicians to use vaccines not derived from the cell lines of the fetuses aborted in the 1960s if such vaccines exist and, if they don’t, to write to pharmaceutical companies urging the development of alternate vaccines.

Nevertheless, it said, the church affirms it is morally licit to use the vaccines “in the meantime insomuch as is necessary in order to avoid a serious risk not only for one’s own children but also, and perhaps more specifically, for the health conditions of the population as a whole, especially for pregnant women.”

The Pontifical Academy of Life’s updated statement, issued in July 2017 after a World Health Organization study showed a “progressive trend” against vaccinations in Italy, said that “the cell lines currently in use are very distant from the original abortions and no longer imply that bond of moral cooperation indispensable for an ethically negative evaluation of their use.”

“The technical characteristics of the production of the vaccines most commonly used in childhood lead us to exclude that there is a morally relevant cooperation between those who use these vaccines today and the practice of voluntary abortion,” the statement said.

https://cruxnow.com/vatican/2019/03/vat ... -children/

Spanish Cardinal Antonio Canizares Llovera of Valencia made headlines when he described as a “work of the devil” attempts to find a COVID-19 vaccine using cell lines created from fetuses aborted voluntarily decades ago.

While his remarks June 14 at Mass in the Valencia cathedral were stronger than many others have used, the Vatican and bishops around the world have been urging governments and scientists to support the development of vaccines that have no connection to abortion.

http://thedialog.org/vatican-news/ethic ... n-bishops/

The church teachings on the subject aren't completely black and white