Ive recently been made aware that some vaccinations such as the measles vaccine contains various aborted fetal material. A Dr. Informed me that the vaccine was devloped in the '60s; yet in todays world that the material is now self propagating and no longer requires new fetal material.
What are the Catholic teachings on vaccines or other such medical procedures who’s orientation is rooted in such fetal material? Are vaccines that use such fetal material unethical?