News Snapshot:
As the highly infectious Delta variant took hold in China last month, Zhang Wenhong, a well-respected infectious disease expert in Shanghai, told a concerned Chinese public to prepare to live with the coronavirus for the long haul — but his candor came at a price. For more than a year, China had largely kept the virus at bay by tightly sealing its borders and swiftly taming local flare-ups with zero tolerance for infections. But despite stringent measures, a dozen cases of the Delta variant were detected among cleaning staff at one of the country’s busiest airports. The variant soon spread...