Caixin China Biz Roundup: Third Sinovac Shot Raises Immunity, Study Says

Researchers say it’s unclear whether a third dose of the vaccine offers protection against Covid variants; Zhengzhou disaster raises questions on the emergency response of the city’s hospitals; and WeChat suspends registration of new users SPECIAL OFFER To enjoy 7-day complimentary access to caixinglobal.com and the English Caixin app visit this link: https://www.caixinglobal.com/institutional-activity/?code=J3XVJC