Transcripts for BBCNEWS BBC News 20211128 13:00:45 archive.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from archive.org Daily Mail and Mail on Sunday newspapers.
Variants and alerting the world. twl at least two cases have been discovered in the uk and that s prompting immediate goveaction the government. reporter: swwarning signs. boris johnson announced up in covid restrictions as fears and questions grow over the new omnicron coronavirus variant. johnson says the variant has already been detected in the uk and scientists warn this highly mutated strain, first identified circulating in countries in southern africa, could challenge some of the hard-fought advances already made against this virus. our scientists are learning more, hour by hour. and it does appear that omnicron spreads very rapidly. and can be spread between people who are double vaccinated. england s chief medical officer, chris witty, says the possibility that vaccines may not be as effective against the omnicron variant is what is galvanizing the government