Coronavirus: Reino Unido considera aplicativo de rastreamento de vírus para facilitar o bloqueio
Media playback is unsupported on your device Media captionWATCH: Why Oxford University experts are urging the rollout of a coronavirus appA coronavirus app that alerts people if they have recently been in contact with someone testing positive for the virus "could play a critical role" in limiting lockdowns, scientists advising the government have said.The location-tracking…