A new needle-free COVID-19 vaccine that uses a jet of air to push it through the skin could give 'wide-ranging protection' against variants and future coronaviruses. The vaccine, developed by Professor Jonathan Heeney of the University of Cambridge with research firm DIOSynVax, is being trialled by the University of Southampton. Trial begins of needle-free Covid vaccine targeting new variants https://t.co/L9LFG5fWeP — BBC News (UK) (@BBCNews) December 14, 2021 The University ...