Subscriber OnlyBusinessWorldChinese County Back Under Lockdown After Coronavirus Cases Re-EmergeAsymptomatic doctors force county to seal residents off againWoman in nearby city infected after visiting one doctorWHO Warns Lifting Virus Restrictions Too Soon Could Lead to Resurge of CasesBloomberg NewsApril 2, 2020, 5:05 AM UTCSign up here for our daily coronavirus newsletter on what you need to know, and subscribe to our Covid-19 podcast for the latest news and analysis.A county in central China has been put under lockdown again after a flare-up in coronavirus cases, pointing to the difficulty of sustaining outbreak containment in the face of carriers who show no signs of sickness.