LOS ANGELES (AP) — U.S. health officials have issued a quarantine order for all 195 American evacuees from China. The evacuees will spend two weeks at a military base in California. They were flown earlier this week from Wuhan, the Chinese city at the center of the new virus outbreak. They landed Wednesday at March Air Reserve Base in Riverside, California. Officials believe it can take up to 14 days for someone who is infected to develop symptoms. As of Thursday, none of the evacuees had shown symptoms of the virus.