Coronavirus in England: half of those with symptoms not isolating

Scientists say failure to follow advice raises questions over test-and-trace policy

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Only half of people who develop coronavirus symptoms self-isolate for at least a week, according to government science advisers, raising urgent questions about the test-and-trace strategy aimed to contain future outbreaks.

The new system, which launched this week, requires people to self-isolate for 14 days if they are told by tracers that they recently came into contact with someone who tested positive for the virus.