The NHS has outlined how it's ensuring that its contact tracing app is transparent, secure, and usable. It said an assurance board containing experts was set up to ensure the app stays within bounds.

Public health officials have long relied on tracking infectious diseases as common as tuberculosis and as lethal as ebola as a way to stop their spread. But manual contact tracing requires boots on ...

Mass testing and manual contact tracing will take too long at a time when speed in identifying and confirming new cases of the virus is of the essence to enable reopening of the economy. In such a ...