Why a New Virus Cluster in China Is Triggering Alarms

A cluster of Covid-19 cases in China’s Rust Belt region has intensified worry over a second wave of coronavirus infections. The central and local leadership have instituted strict measures, including halting public transport services for more than 100 million people and sealing off residential compounds in some cities, as Chinese President Xi Jinping called for strengthened controls. While many other countries are still grappling with the first wave of outbreak, this re-emergence in China, while