UK Covid live: No 10 refuses to back health chief's call for people to avoid unnecessary socialising

Unusual rebuke for Dr Jenny Harries comes after she says reducing social contacts could help keep new variant's spread at bay Top UK health official cautions against festive season social events Moderna boss predicts current jabs may be less effective against Omicron As rules on face masks return, what exactly is the law? View from South Africa: milder symptoms but not to be underestimated See all our coronavirus coverage Ministers have failed to provide proper evidence to justify their decision...