Why Delta is so much more infectious, vaccines for transplant patients, more data from mixing and matching. Professor Luke O'Neill joined Pat to discuss all and more this morning.

 Listen and subscribe to The Pat Kenny Show 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'.