The debate around what role rapid Covid-19 testing should have on the speed at which society opens up moved up a gear on Wednesday.
Hundreds of workers from the aviation sector took their message to the offices of the Chief Medical Officer, calling for rapid antigen testing for passengers to be rolled out.
Other sectors, as well as some public health experts, have been advocating for greater use of antigen testing. NPHET has said it would support increased antigen testing if studies show the benefit.
But how does antigen testing differ from PCR testing, which up until now we are likely more familiar with in Ireland? Testing For rapid antigen testing, the tester will use a swab to take a sample from a person's nose.