On April 10, 2020, this report was posted online as an MMWR Early Release.CDC COVID-19 Response TeamCommunity transmission of COVID-19 was first detected in the United States in February 2020.
By mid-March, all 50 states, the District of Columbia, New York City, and four U.S. territories had reported cases of COVID-19.As of April 7, cumulative incidence of COVID-19 ranged widely across U.S.
jurisdictions (from 20.6 to 915.3 cases per 100,000) and 7-day increases in incidence varied considerably (from 8.3 to 418.0).