As the UK heads into a troubling second wave of coronavirus cases, those in contact with thousands of people who just tested positive for COVID-19 in England went about their lives for up to a week unaware they had rubbed shoulders with a carrier. It’s estimated as many as 48,000 people were not informed they had come in close contact with people who had tested positive, and by this morning, half of them still hadn’t been warned or told to self-isolate.

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