Jennifer Haller poses for a photo after she was given a shot in the first-stage study of a potential coronavirus vaccine (Picture: AP)

The first person in the world to trial a possible vaccine for Covid-19 has said ‘it was as easy as a regular flu shot’.

Jennifer Haller, 44, heard about the experiment through a Facebook post and thought to herself ‘maybe there is something I could do to contribute’ to the global fight against the pandemic which has infected 1.5 million people and killed more than 80,000.