Dido Harding, the head of England's COVID-19 test and trace system, has been told to self-isolate by her own mobile phone app.

NEW YORK CITY (WABC) -- A new tool will allow New Yorkers to easily verify that a person reaching out to them is an official contract tracer. "We are proactively launching this tool to keep New ...

A new wave of mobile apps that help track exposure to the coronavirus is coming to U.S. states ahead of the holidays as public health officials bet that recently introduced features from Apple Inc and ...