The Johnson & Johnson vaccine against Covid-19 has been approved for use by the European Medicines Agency. Unlike the other vaccines, it only requires one dose, and could speed up our vaccination programme. But, there are some concerns after rare blood clots were reported in the U.S. To find out more, we spoke to Professor Luke O'Neill from Trinity College Dublin.

The Hard Shoulder

Listen and subscribe to The Hard Shoulder on Apple Podcasts, Google Podcasts and Spotify.

Download, listen and subscribe on the Newstalk App.

You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.