Evacuated Americans arrive in U.S. from Wuhan, China

A Boeing 747-4B5(F), on a charter flight from Wuhan, China, arrives at Ted Stevens Anchorage International Airport for refueling on Wednesday. Photo: Lance King/Getty Images

A chartered plane carrying some 195 Americans from Wuhan, the epicenter of the coronavirus outbreak in China, landed in March Air Reserve Base in Riverside County, California, early Wednesday, according to the Centers for Disease Control and Prevention.

What's happening: The passengers were screened before takeoff, during the flight, during refueling in Anchorage, Alaska, and upon arrival, said Nancy Messonnier, director of the National Center for Immunization and Respiratory Diseases. None of them showed symptoms of the virus, but they have volunteered to stay on the base for three days.

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"These individuals will be screened before they take off; monitored during the duration of the flight by medical personnel on board; screened again on landing to refuel in Anchorage, Alaska; monitored on the last leg of the flight by medical personnel on board; evaluated upon arrival at March Air Reserve Base ... and then monitored for symptoms post-arrival."

CDC statement

The big picture: San Francisco was due to be the final destination, but it was changed to Ontario, California, before being changed again to Riverside.

Go deeper: What's happening with the coronavirus

Editor's note: This article has been updated with new details throughout.