The practice must be banned. A single human life -- any single human life -- even be it a mere embryonic mass, is worth more than all the altruism in entire cosmos, along with it's total effects. Why? The short answer is that Christ is risen from the dead, trampling down death by death, and upon those in the tombs bestowing life! The long answer has to do precisely with a particular form of selective altruism that various medical practitioners have been doing for awhile now, and with the precise path that led to it. Entrance onto this slippery path requires only the approval of the devaluation of any single human life -- even if that life is just an embryo.
Forced Organ Harvesting: “One of the worst mass atrocities of this century”
These empty souls don't even care enough about their victims to give them anesthesia for the procedure. They just chemically immobilize them and force them to helplessly watch and to feel themselves being butchered to death while still alive.
There are other ways to develop medicines. Let us develop and use them.
I received an approved short term religious accommodation recently from my employer. I applied for it before I knew the official stance of the Holy Synod. I’m pretty certain this makes me disobedient and I’m only a catechumen! It does sincerely bother me to use products connected through research, development and testing with stem cell lines from aborted fetuses. I now only eat plain foods in their natural form without additives and take very limited medications/supplements for that reason. My life would be much more convenient if I didn’t consider the fetal stem cell angle for sure and I’m grateful to even have that luxury. Either the decision to take the vaccine or to not take it seems to call for repentance! 
