What is contact tracing?

Article by Devin Coldewey, TechCrunch.

One of the best tools we have to slow the spread of the coronavirus is, as you have no doubt heard by now, contact tracing. But what exactly is contact tracing, who does it and how, and do you need to worry about it?

In short, contact tracing helps prevent the spread of a virus by proactively finding people at higher risk than others due to potential exposure, notifying them if possible, and quarantining them if necessary. It’s a proven technique, and smartphones could help make it even more effective — but only if privacy and other concerns can be overcome. […]

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