As of Tuesday, there have been over 100 cases of coronavirus in the U.S., resulting in 9 deaths (all in Washington state). Experts in Washington state believe that the virus may have been spreading in that area for weeks undetected because of limitations in testing.
VP Mike Pence has said that the CDC will now lift restrictions on testing for coronavirus, and will be releasing guidelines for fast-track testing. This may help to better identify specific areas where the virus is spreading and where stricter containment measures are needed. Stricter containment measures do seem to have worked in China, with the daily rate of new infections dropping for the last several days.