After the first two cases of the South African Omicron variant in England, British Prime Minister Boris Johnson announces new measures: the mask is therefore mandatory in shops and on public transport. “We don’t know how effective our vaccines will be, but we have good reason to believe they will provide at least some protection,” says Johnson, “absolutely confident” that Christmas 2021 will be better than last year. Read also The omicron variant “spreads very quickly” and can also “spread among people who have two doses” of the Covid vaccine, the prime minister said at a press conference on Downing Street. The UK will have to undergo a PCR test within 48 hours of their arrival and self-isolate until they receive a negative result, Johnson explained, who stressed that he didn’t want to interrupt travel, explaining that entry restrictions can only slow down. the spread of any new variant, do not stop it.