Michael Gove warns MPs strict rules are still needed in England despite lockdown ending on 2 December.
There is no evidence that it protects against Covid-19 but it could boost the health of the vulnerable.
Public health leaders question whether it is possible to expand mass testing schemes in England.
Prof Robin Shattock, head of Mucosal Infection and Immunity at Imperial College, answers viewers' questions.
Scientists spell out measures to minimise coronavirus infection risk when rules are relaxed at Christmas.
Scientific advisers to the government estimate the coronavirus epidemic is no longer growing.
England will move to a tougher version of tiered coronavirus restrictions when lockdown ends next week.
Couples share their stories of how Covid-19 restrictions exacerbated the impact of losing a baby.
We answer some of your questions about the Oxford vaccine.
The referral is "a significant first step" to a possible rollout of the vaccine, the government says.