U.S. confirms third case of COVID-19 with unknown origin

The United States has confirmed the third COVID-19 case in Oregon's Washington County involving a person who isn't believed to have traveled overseas or come in close contact with anyone who had it, indicating that the virus may be spreading undetected in local communities, according to local media reports.

Earlier, two patients in California were confirmed to be infected by the novel coronavirus with an unknown origin.

As of Friday evening, a total of 64 cases of COVID-19 have been confirmed in the United States.