https://www.reuters.com/article/us-health-ooronavirus-apps/google-says-20-u-s-states-territories-exploring-contact-tracing-apps-idUSKCN24W2P1

Alphabet Inc's Google said on Friday that 20 U.S. states and territories, representing about 45% of the country's population, are "exploring" contact tracing apps for the novel coronavirus using a tool it developed with Apple Inc.