Coronavirus spread from China. Now, China doesn’t want the world spreading it back.

China's new coronavirus challenge is forming far beyond its own borders. "China thought that once it had contained the epidemic, that would be the end of it, said Zhang Wenhong, director of the department of infectious diseases at Shanghai Huashan Hospital, affiliated with Fudan University. But now, more cases are emerging abroad than in China — and they’re starting to come back." Writing in The Washington Post, Anna Fifield reports.