Study sees subjects deliberately exposed to Covid-19

Study will see up to 90 volunteers exposed to low doses of Covid to find out how much of the virus leads to infection

The human challenge model can provide a more efficient and faster way to develop vaccines as fewer volunteers are required.

Irish pharmaceutical research company Open Orphan has announced an update in the world's first Covid-19 characterisation study where subjects were deliberately exposed to the virus.

The study was carried out by Open Orphan's subsidiary hVIVO in London this month.