Coronavirus: PM holds update after vaccine breakthrough - BBC News
The vaccine offers more than 90% of people protection from getting Covid, preliminary trials show.
Meanwhile, Joe Biden has made his first speech about coronavirus after forming a panel made up of 13 scientists to advise him as he prepares to take office.

He tells Americans that regardless of how they voted in the election, they should wear masks in order to protect themselves and other citizens. "Wear a mask, it's the single most potent weapon against the virus," he says. Face coverings have become politically divisive in the US.

Biden says the vaccine development process must be transparent so Americans can have confidence in the Covid-19 vaccine. He notes it won't be available for many months yet.

"The challenge before us right now is still immense and growing. Although I'm not in office yet I'm just laying out what we expect to do and hope some of it can be done between now and the time I'm sworn in."

He adds that "there's a need for bold action" as cases, hospitalisations and deaths are all going up.

His remarks contrast with many of Donald Trump's who at times underplayed the severity of the pandemic.