Some key industries in Wuhan, the Chinese city at the epicenter of the coronavirus epidemic, were told they can resume work on Wednesday, a day after President Xi Jinping visited the city for the first time since the outbreak began.  The city of 11 million has been in lockdown since late January, but Xi’s visit signaled the tide was turning in the government’s favor as it fights to contain a virus that as of Tuesday had infected 80,778 people in China and killed 3,158. As some people were told they could gradually return to work at the epicenter of the epidemic, authorities elsewhere in the country were lowering emergency response levels to the epidemic and relaxing […]