China sees biggest Covid-19 spike in over five months, four cities in lockdown

China has recorded the biggest daily jump in Covid cases in more than five months, despite four cities in lockdown, increased testing and other measures aimed at preventing another wave of infections in the world's second-biggest economy.

Most of the new patients were reported near the capital Beijing, but a province in northeast China also saw a rise in new cases, official data showed, amid a resurgence that has seen more than 28 million people under home quarantine...