China’s eastern coastal province of Zhejiang remains the focus of the country’s latest coronavirus outbreak , with 74 more community cases reported across three cities. Provincial authorities said on Monday that since December 5, 192 cases had been detected in Zhejiang, 123 of them in the city of Shaoxing. Ningbo reported 51 and Hangzhou had 18 for the week. The wave was caused by the highly transmissible Delta variant and could be traced back to cases in the neighbouring city of Shanghai and Jiangsu province. A dozen Chinese-listed companies have suspended production in Zhejiang at the request of local authorities, according to filings on Shanghai and Shenzhen stock exchanges. The companies said they would comply with the Covid-19 control efforts of local authorities, which would decide when production could resume. Don’t go home for the Lunar New Year, Chinese workers urged Shaoxing has gone into mass-testing gear, setting up three inflatable Covid-19 testing labs to increase capacity. It reported 55 new cases while Ningbo had 14 after a third round of mass testing on Sunday. Hangzhou reported five new cases, and asked people to avoid large gatherings and maintain personal hygiene in a public letter to its residents on Sunday. Elsewhere in the country, the northern border city of Manzhouli found five local cases and Xian in northwestern Shaanxi province had one. There were also 38 imported cases, 21 of those symptomatic. China has used mass testing, frequent contact tracing, lengthy quarantines and strict border controls to control the spread of the virus. Health officials have said the country is leaning into a “dynamic zero-Covid strategy”. On Saturday, Liang Wannian, the head of a Chinese government expert panel, said the country was “not in a pursuit of zero infections, but to put out outbreaks as soon as possible”. “Once a case is detected, [authorities] will quickly implement public health and social intervention measures, including controlling outbreak areas, managing close contacts, conducting epidemiological investigations and reducing gatherings,” Liang said.