Comment on Ultrasound can push vaccines into the body without needles

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Ashyr@sh.itjust.works ⁨11⁩ ⁨months⁩ ago

Actual hyposprays have been around since the 60’s. They are, by all account, quite painful and ironically not very hygienic.

en.m.wikipedia.org/wiki/Jet_injector

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