BEIJING (AP) - The southern Chinese city of Guangzhou shut down a neighborhood and ordered its residents to stay home Saturday for door-to-door coronavirus testing following an upsurge in infections that has rattled authorities.Guangzhou, a business and industrial center of 15 million people north of Hong Hong, has reported 20 new infections over the past week.
The number is small compared with India’s thousands of daily cases but alarmed Chinese authorities who believed they had the disease under control.The spread of infections was "fast and strong," the official Global Times newspaper cited health authorities as saying.RELATED: Biden orders more intel investigation of COVID-19 originSaturday's order to stay home applied to residents of.