The antecedent technologies used to produce the vaccines, without which their development would have been impossible, were developed using fetal cell lines.
The “Catholic Church”, of which I am a traditionalist member, has been issuing liberal and leftist oriented advice on various matters for some years. I feel sorry for contemporary Catholics who assume they are getting genuine Catholic advice from the Vatican. They aren’t.
Which antecedent technologies are you referring to specifically, which were instrumental in the development of the mRNA platform and which relied necessarily on fetal stem cell use?