Researchers in Cardiff and the US work out how the Covid jab may be linked to the extremely rare clots.
It's called sotrovimab and should cut the risk of severe illness, even for new variants such as Omicron, say scientists.
People should try to reduce Covid transmission so we can all enjoy Christmas "knees up", Therese Coffey says.
Other groups have reported higher protection, but the results are still seen as a triumph.
A question everyone's asking: what's my Covid risk? Here's how to find out.
Borrowing - which hit a record £22.3bn in October - cannot go on indefinitely, chancellor says.