As focus turns to Covid boosters what other measures could tackle Omicron

Boris Johnson has not ruled out new restrictions but how effective could they be and what are the political risks

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Ministers' focus may be a national mission" to roll out booster vaccines to counter the dramatic rise of the Omicron variant, but the government has not ruled out new restrictions for England. Here we look at options on the table, how effective they could be at reducing the spread of coronavirus and the level of political risk for Boris Johnson.

Mandatory isolation for all close Covid contacts