Vaccine news is coming at us rapidly over the last couple of days.

The latest news today is that Pfizer and BioNTech have said their vaccine has now proved 95% effective in preventing coronavirus.

They say they plan to submit the COVID-19 vaccine to the US regulator for emergency use approval.

Luke O'Neill is Professor of Immunology at Trinity College Dublin, and on Wednesday's edition of The Hard Shoulder, he told Kieran why it was such good news.