A new COVID-19 vaccine trial has started in Australia which doesn't involve needle injections.
 
The Covalia trial is using a jet injector to deliver a DNA vaccine to healthy volunteers.
 
The device is one of the key features of the new vaccine trial which is recruiting adults in Sydney Adelaide, and Perth.
"What we're doing in this particular trial is just taking the DNA code and using a special needle-free device, to force under mechanical force that DNA genetic code into the cells," the trial's lead investigator, Associate Professor Nick Wood from the University of Sydney, said.
 
The Covigen vaccine is designed to deliver DNA instructions to teach the body's cells to make the COVID-19 spike proteins, the knobs that project from the surface of the virus, so the immune system can build a defence.