This is an excellent post, particularly regarding contaminats in commercial vaccines. I believe the Catholic bishops in Kenya several years back had the tetanus vaccine tested and claimed to find components that can induce infertility in women.
As a general rule, vaccines are valuable to personal and public health as history testifies. But it's not unthinkable that the population control & destroy cabal would hijack them for their anti-human agenda.
"Those who you trust the most" - paraphrasing Q. Perhaps also those things you trust the most.