China’s capital Beijing said today it will investigate all individuals who entered the city from abroad from Dec 10 and shut down a subway station after reporting the biggest daily jump in new Covid-19 cases in more than three weeks.

The measures come amid what has become the country’s most severe Covid-19 outbreak since March 2020 ahead of the key Chinese Lunar New Year holiday season, when hundreds of millions travel, raising fears of another major Covid-19 wave that could bring the country back into a debilitating standstill...