The conspiracy part. I mean every provider in the world with the exception of the anally probed would have to be part of an ironclad "mission" as never seen in the history of civilization.
Nope.
As far as not being able to track adverse events? That too is nonsense at least in the US where we have this:
VAERS, the model of adverse vaccine reporting.
If there's an adverse effect the manufacturer, lot number, everything relevant can easily be had as these are recorded. Go to Walgreens or other pharmacy? The prescriber, the innoculator, the vaccine name, lot# and more are recorded and this uploaded to HHS or auditable if an event is reported. Doesn't matter where it's made or who makes it, it's there for the proper people to see and more, adverse effects become part of a computer system which looks for correlations to find bad lots or if there's a higher regional events, clinic issues (which may indicate not a problem of vaccine but that there are infections causing symptoms which may be reported).
Why does this system exist? I'd like to say because it should but the reason is that the anti-vaxxer nutters were getting pretty damn good at bringing back the horrors of pre-vax days.
Did you know that an extremely effective vaccination exists for Lyme Disease? I mean really really effective. My dogs got the shot, but you can't because the conspiracy nutters threw up so many lawsuits that the manufacturer gave up fighting them.
There are 30K new cases every year of Lyme and permanent neurological damage is often the reason people seek help. Thousands upon thousands of lives ruined because some nutter decided that it's better than having a safe shot.
Incredible, but stupid.