BEIJING—A second Chinese city will be locked down by government authorities, an expansion of an unprecedented experiment to try to contain a fast-spreading coronavirus that has killed at least 17 people and infected more than 500.

On Thursday, authorities in Huanggang—a city of 7.5 million people—said they won’t let long-distance trains and buses run from the urban center and will shut its public transportation system in the lockdown zone, effective midnight Friday local time. Huanggang is about 35 miles east of Wuhan, a city…

Read More