The vast majority of the population is still susceptible to coronavirus, the UK's chief scientific adviser has warned.Speaking at the daily Downing Street press conference, Sir Patrick Vallance said around six to seven per cent of the population are thought to have contracted COVID-19.The latest data comes as the Prime Minister announced that single households could form a 'support bubble' with one other household.From Saturday, single adult households or single parents under 18 can spend time with one other household, and do not have to stay two metres apart.The chief scientific adviser said the R rate across the country was still below one, but warned that the UK must demonstrate 'caution' in how lockdown is eased.He told the daily.
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