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Ultrasound can push vaccines into the body without needles
(www.newscientist.com)
This is a most excellent place for technology news and articles.
It fucking sucks, more because a lot of providers don't (or didn't. They've been getting better) take seriously. They'd treat you like a baby or a hypochondriac, right up until you scare them half to death by WHAT YOU SAID WOULD HAPPEN happening.
The stopping-breathing thing is super-rare, so even people expecting that "complely calm-seeming patient" pass-out are shocked when that same unconscious patient starts holding their breath and shaking.