https://www.mobihealthnews.com/news/google-apple-contact-tracing-api-updated-new-dev-tools-cross-country-interoperability-location

Google has posted an update on Exposure Notifications – their system-level framework for COVID-19 contact tracing developed in tandem with Apple – revealing that the tools have been incorporated into digital contact-tracing apps launched in 16 countries.

Further, 20 U.S. states and territories are “exploring apps”