Contact tracing alone has little impact on curbing Covid spread, report finds


Self-isolating on symptoms gives ‘majority of transmission reduction’, new data shows

Contact tracing alone has a marginal impact on Covid transmission, curbing the spread of the disease by just 2% to 5%, official estimates show.

The figures come after Dido Harding, who heads the UK government’s £22bn test and trace programme, suggested it was set to substantially reduce the spread of coronavirus this spring.

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