History Photographed (@historyinpics) 's Twitter Profile
History Photographed

@historyinpics

Sharing the most interesting moments in history. History should not be censored

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History Photographed (@historyinpics) 's Twitter Profile Photo
History Photographed
@historyinpics

3 years ago

Jet injectors were used for mass vaccination, and as an alternative to needle syringes. The devices used compressed air to deliver vaccines, forcing the liquid through the skin without a needle; the jet injector was widely hailed as "the peace gun."