AP
The nation’s capital has become one of the first jurisdictions in the country to employ a new COVID-19 notification system, a joint Google-Apple venture that delivers alerts to people’s phones, notifying them that they may have been exposed to the coronavirus. … The new Exposure Notification Express model is a major tweak to existing Google-Apple contact tracing software that became available earlier this year. But that tool was not readily embraced by health departments around the country, partially because it required jurisdictions to build and maintain their own apps.