Facebook is tracking coronavirus symptoms county-by-county, with an opt-in survey designed to help identify hotspots earlier.
hotspots before the cases are confirmed. The map breaks down the percentage of people per county who have self-reported coronavirus symptoms, such as loss of smell, cough and fever.
More than 1 million people responded to the survey within the first two weeks, according to Facebook. CEO Mark Zuckerberg said the company will roll out the survey globally this week, which will help it provide a more complete picture.and privacy. Zuckerberg said Monday that Facebook can only see aggregated data. The Carnegie Mellon researchers can see individual survey responses, however.
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