The director of the Oxford Vaccine group says this vaccine is also easier to store than others.
Contacts of people with the virus will not need to quarantine if they test negative, the government says.
The health secretary says the bulk of the vaccine rollout will happen in early 2021.
The vaccine is cheaper than other options and easier to distribute around the world.
A 14-year-old transgender boy is taking legal action against NHS England over treatment delays.
A question everyone's asking: what's my Covid risk? Here's how to find out.
Staff at a 14-bed hospital in North Dakota tell first-hand their fight to keep friends' family members alive.
20-year-old Masha needs an experimental drug to help treat her cancer but her private insurer won't pay for it.
Borrowing - which hit a record £22.3bn in October - cannot go on indefinitely, chancellor says.
The government hopes the funding will address the extra demand for services amid the Covid pandemic.
A look at some of the stories you may have missed this week.
An injection of antibodies might provide up to six months' protection to immuno-compromised patients.