Even as authorities lock down cities in China’s worst outbreak in two years , they are looking for an exit from what has been a successful but onerous COVID-19 prevention strategy. A study, interviews with Chinese public health staff and recent public messaging by government-affiliated experts indicate that China is exploring ways of slowly easing its zero-tolerance approach — with the emphasis on slowly. The latest sign came Monday in an essay published by Zhang Wenhong, an infectious disease specialist who […]