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But a spokesperson said: "The NHS Covid-19 app has prevented thousands of cases and is a vital tool to help protect against the spread of Covid-19 by alerting people when they may have been in contact with a confirmed case.
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Covid app sends record number of pings People "pinged" by the app with a "close contact" alert are advised to take daily Covid tests - or self-isolate if they are unvaccinated and over 18 - in order to reduce the likelihood of Covid transmission, but there is no legal requirement for them to do so. During the summer, the app caused concern when large numbers of workers in various industries received pings, leaving them temporarily unable to do their jobs while they isolated many business listings.