Exiting lockdown and the Covid-19 tier system

Professor Dame Anne Johnson (UCL Institute for Global Health) explains the rationale behind the system of tiers for Covid-19, and cautions that despite a flattening of infection rates, the UK is still not in a position to relax restrictions.

Listen: BBC Radio 4’s ‘Today Programme’ (from 1 hour 37 mins 52 secs), More: BBC Radio 2 News (from 2 hours 30 mins 19 secs)