I guess it depends on how you look at it.
Well, given that it is a sin to harvest blood instead of pouring it on the ground, somebody is directly responsible to God for the sin of not disposing of the blood that is ultimately used to make vaccines and other products. That’s where the buck ends. But when God only tries one person for the sin and not everybody in the chain of production and consumption: “Well, by the time it got to me, it was very diluted” Yeah, but you were part of the chain based on sin. Where is the justice? The one’s benefiting from sinful conduct are not liable because the final product is diluted out?
On the one hand covid vaccine is quasi compulsory if you want to be in some areas? but on the other hand a vaccine such as anti-venom or rabies is up to your conscience? even if your conscience kills you. Nobody will compel you or try to convince you to take the vaccine facing death because the vaccine contains blood.
Ultimately if any blood was used in the production of a vaccine, somebody is accountable to God fo the blood that was not disposed of, if doing that is a sin.