New data from Addenbrooke's Hospital in Cambridge shows a single dose of the Pfizer jab dramatically reduces the chances of spreading Covid-19 to someone else.
Nearly half the people in some parts of the Anglia region have been given the first dose of Covid vaccine while it is as low as a quarter in others.
The weekly number of new coronavirus infections in the Anglia region has fallen below 100 cases per 100,000 people for the first time since 22 October.