tag | contact tracing

How do you contact trace the President of the United States?

“This is a very, very different case of contact tracing: It’s very hard to forget that you had contact with the President of the United States,”


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Updated: August 17, 2020 | 3:22 pm

Pennsylvania prepares to launch virus-tracing app next month

The app is designed to automatically notify people if they might have been exposed to the coronavirus.

By Marc Levy/The Associated Press