BEIJING: China locked down a county that has seen the most Covid-19 cases in the country’s latest delta outbreak, as an initial flareup in the country’s northwest quickly spirals into a nationwide surge.

Ejin, a county in China’s Inner Mongolia region, asked its 35,700 residents to stay home from Monday and warned of civil and criminal liabilities should anyone disobey the order, state broadcaster CCTV reported, citing a local government statement.…