Facebook has released a map of coronavirus symptoms crowdsourced from its users

https://www.technologyreview.com/2020/04/21/1000294/facebook-has-released-a-map-of-coronavirus-symptoms-crowdsourced-from-its-users/?truid=e6a9a97f971519b8818ba7420a6d576d&utm_source=weekend_reads&utm_medium=email&utm_campaign=weekend_reads.unpaid.engagement