shareSharenocloseShare pagelinkCopy linkAbout sharing
Controversial restrictions came into place in England this week, as a month-long lockdown ended. Areas have been placed in one of three tiers.
But how was it decided which tier was right for which area? One of the key factors is the rate of coronavirus cases among people over the age of 60.
The BBC has analysed the latest figures for areas with both the highest infection rates among the over-60s, and places where the virus is more common in older people than those younger.
In the week to 28 November Boston, in Lincolnshire, had the highest number of coronavirus cases among