More than 80% positive cases in Covid study had no core symptoms

ONS survey said 86.1% of people between April and June had none of the virus’ main symptoms

More than 80% of people who tested positive in a national coronavirus survey had none of the core symptoms of the disease the day they took the test, scientists say.

The finding has prompted fears that future Covid-19 outbreaks will be hard to control without more widespread testing in the community to pick up “silent transmission”, particularly in universities and high-risk workplaces such as meat processing facilities.

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