On 25 March , the New York governor said social distancing seemed to be working , as estimates of case doubling slowed from 2.0 days to 4.7 days .
In late March , the U.S. federal government 's health inspectors reported a shortage of test supplies , PPEs , and other resources in more than 320 surveyed hospitals due to the patients staying in them until receiving test results for the 2019-20 coronavirus .