Religious leaders that you might hear speaking out against vaccines are typically contradicting what their religion actually says about vaccinating and protecting kids.
The National Catholic Bioethics Center
MRC-5 is the name for a cell line that is used to make some vaccines, not an electively aborted baby boy.
Need evidence that some parents are abusing religious exemptions?
Arthur Caplan is an expert on medical ethics and often writes about vaccines and combatting anti-vaccine misinformation.