Reading through the archived thread it seems fake. The poster doesn't link a video, eventually someone else finds it and links it and it's in Slovenian so it takes awhile for an anon who knows the language to show up to interpret. When someone finally does he says this:

The senior nurse at the University Medical Center in Ljubljana, who is in charge of receiving the bottles and managing everything, resigned, went in front of the cameras and pulled out the vaccine bottles. He showed people the codes in the bottles, each with 1, 2, or 3 numbers, and then explained the meaning of those numbers.

Now you a just lying. She doesn't pull any bottles ain the vdeo, you lying cunt! Trying to poison the well, are you ?

He says he was personally witnessing the injection of all the politicians and great leaders

It's a SHE anon and she doesn't say that. Fucking liar-do you think you could make us look stupid by peddling this video? Did you choose Slovenia because you thought our country is so small noone will be able to call your bullshit ? Hope your boss sees your failed attempt at and fires you, swine!

Still not getting vaccinated but I hope you do. With number 1.

TLDR: Looks like more fake news, but just to be sure anyone here who understands Slovenian should give it a watch.