Institute of Epidemiology & Health Care


Use lateral flow tests ‘hours before’ festive get-togethers with high-risk people

19 January 2022

People should use lateral flow tests hours before meeting up with others in light of the apparent infectiousness of the Omicron variant, as those infected “may switch from being non-infectious to infectious within hours,” says Professor Irene Petersen (UCL Epidemiology & Health).

Picture of festive period- covid

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