Chinese health officials in the eastern city of Qingdao carried out 9,947,304 Covid-19 tests in four days as part of a citywide effort to stop a cluster of 12 coronavirus cases from growing into a major breakout.
Qingdao's Municipal Health Commission said Thursday that 7,646,353 test results have been returned, among which no new positive cases have been identified.
The mass testing program was rolled out by authorities after three asymptomatic patients with links to a hospital treating imported cases were identified over the weekend.
Cases throughout China: China's National Health Commission said 11 new cases were reported on Wednesday throughout the country. Ten of those were imported, and one was an asymptomatic case that started presenting symptoms.
Chinese authorities count asymptomatic cases separately from symptomatic ones.