The priority will be given to residents who have not been tested before, people living in residential compounds that had previous cases of infection, as well as old or densely populated estates, Xinhua said, citing a Wuhan government meeting.
China has reported 17 new coronavirus cases, including 12 asymptomatic infections, while officials in Wuhan, where the outbreak originated, continued vigorous testing of its over 11 million residents after new clusters of COVID-19 emerged in parts of the city.
The variety of tests administered on May 15 within the metropolis of 11 million residents was greater than 50% larger than the 72,791 tests conducted a day earlier, and was additionally the very best because the Wuhan Municipal Health Commission began publishing the information on February 21.
Zhong, who helped expose the scale of the 2003 outbreak of Severe Acute Respiratory Syndrome (SARS), also said authorities in ground-zero Wuhan had under-reported cases during the early days of the pandemic. It is also doubtful if the city can process the entire samples or whether it is expedient to commit such resources to use when the level of coronavirus infection is just six cases in the last one month. Those who test positive now will be notified as soon as possible.
State media did not say how many people had been tested before April 1.
China faces a potential second wave of coronavirus infections due to a lack of immunity among its population, its government's senior medical advisor has warned.
Global COVID-19 cases reach over 4.5mn: Johns Hopkins
Michael Ryan told reporters on Wednesday, adding: "This virus may become just another endemic virus in our communities". The number has increased 2.5 times a month since the number of people exceeded 120,000 on April 14.
The official test number for May 14 will be published on Friday.
No confirmed cases with symptoms were identified May 14-16, though 28 new asymptomatic carriers were found, according to daily reports published by the Wuhan health authority. All were locally transmitted.
Recent outbreaks in the northeasterly Heilongjiang province and Jilin city have contributed to fears of other fresh outbreaks in China. The NHC said that 561 asymptomatic cases, including 30 from overseas, were still under medical observation.
China has stopped foreigners entering the country as a precaution against imported infections.
The ambitious 10-day target of testing everyone in the city of over 11 million, which is now reopening after being the first to be sealed off on January 23, underlines China's anxiety over the resurgence of the virus which infected more than 82,000 of its people, killing over four thousand.