I still think getting a flu shot is directly linked to getting the flu

[Rev. Rye]

And even the inactivated form is liable to fuck up and fail to kill the viruses. Yes, I've done both forms, and still got it.

And here's an article explaining why they don't work, and its explanation seems to match mine.

http://www.sciencemag.org/news/2017/09/why-flu-vaccine

This article supports what I wrote earlier, that the vaccine sometimes imparts ineffective immunity. Not the OPs assertion that the vaccine causes infection or is "directly linked to " infection. By the way, the vaccine does not kill viruses.

I guess we must be thinking of different types of inactivated vaccines; still, even then, sometimes the detergent fails to disrupt the virus in a split virus vaccine or a subunit vaccine may fail to remove the components of a virus that allow it to survive or reproduce. Maybe "directly linked" may not have been the best phrasing, implying the sort of strong causal link that's been demonstrated between smoking and cancer; then again, when the propter hoc is followed by the post hoc this goddam consistently for some people, there's a reason some people think that.

The point is, it's nowhere near as effective as some like to think, and the evidence does support this claim.