13-12-2021, 03:43 PM
Mr Johnson gave his update on Sunday evening, just hours after the UK's Covid alert level was raised to four due to the spread of the new Omicron virus variant.
Level four means a high or rising level of transmission - the last time the UK was at this level was in May.
People have been told to work from home from Monday "if they can", as part of the UK government's introduction of Plan B measures.
"It is now clear that two doses of vaccine are simply not enough to give the level of protection we all need. But the good news is that our scientists are confident that with a third dose, a booster dose, we can all bring our level of protection back up."
He added: "At this point our scientists cannot say that Omicron is less severe.
https://www.bbc.com/news/uk-59631570
Level four means a high or rising level of transmission - the last time the UK was at this level was in May.
People have been told to work from home from Monday "if they can", as part of the UK government's introduction of Plan B measures.
"It is now clear that two doses of vaccine are simply not enough to give the level of protection we all need. But the good news is that our scientists are confident that with a third dose, a booster dose, we can all bring our level of protection back up."
He added: "At this point our scientists cannot say that Omicron is less severe.
https://www.bbc.com/news/uk-59631570