Human Consumption (Brit Shalom 52)

Forbidden foods only apply to what's normally eaten by human beings, and only what's consumed orally. For these two reasons, there is no prohibition to inject dead fetus cells into our bodies.
However, it's absolutely forbidden to ever inject poisons and toxins into our bodies, or even into animals.
There is a leniency to experiment on animals and if and when proven not deadly, to inject humans with poisons and toxins if it is determined to be a necessary evil to save lives.
If, as there is today, there are many perfectly safe and extremely effective non poisonous and toxic ways to prevent and cure the illness, then there is no leniency for humans or animals to inject the poisons.
Similarly, if there is no safety studies, as in todays experimental poison, and how much more so when there have already been hundreds of thousands of adverse effects and fatalities, there is no leniency to inject this poison.