Dr.Tomas Ryan, Associate Professor in the School of Biochemistry and Immunology at Trinity College Dublin and neuroscientist and molecular biologist reacts to the spike in covid cases.

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'.