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Fearing second wave, China’s Wuhan ramps up coronavirus tests

WUHAN, China (Reuters) – Authorities in Wuhan have tested over 3 million residents for the coronavirus in April and May and aim to test all of the rest, state media said, as the city at the epicentre of the original outbreak faces the threat of a second wave of infections.

Priority will go to residents who have not been tested before, and people living in residential compounds with previous cases of infection, or old or densely populated estates, the official Xinhua News Agency reported late Thursday, citing a Wuhan government meeting.

Fears of a second wave just as businesses and schools reopen flared at the weekend after Wuhan reported a cluster of cases, the first since a lockdown was lifted on April 8.

Those infections were previously asymptomatic – people who had the virus but had shown no fever or other symptoms.

Authorities should have a clear indication of the number of asymptomatic cases once everyone in the city has been tested, Xinhua said, without giving a timeframe for that process.

Reuters, citing an internal document to district officials, reported on May 11 that the city planned to conduct the tests for the rest of its 11 million residents over just 10 days.

On Friday in open-air plazas, Wuhan residents waited patiently in long queues for their turn to take the test.

“I think it’s necessary,” said Wuhan resident Tong Zheguang, 32. “There’s a possibility of a recurrence of the epidemic.”

Jiang Liandi, 70, said: “Of course I’m a little bit worried. I’m also afraid there will be new infections.”

Wuhan has detected more than a dozen asymptomatic infections per day in recent days.

Medical workers in protective suits conduct nucleic acid testings for residents at a residential compound in Wuhan, the Chinese city hit hardest by the coronavirus disease (COVID-19) outbreak, Hubei province, China May 15, 2020. REUTERS/Aly Song

Some experts say the mass testing is unprecedented in scale, and shows the level of concern. Others say the sheer size of the operation is bound to lead to errors.

The city conducted 1.79 million coronavirus tests from April 1 to May 13, according to Reuters calculations based on daily reports published by the city’s health commission.

If Xinhua’s report that 3 million tests have been conducted since April also uses figures from the health commission, that would suggest up to 1.2 million tests were administered on May 14 alone.

But the health authority said late on Friday, without elaborating, that 72,791 tests had been conducted on May 14.

That was up from 67,026 tests on May 13 and the second-highest total since it started publishing such data on Feb. 21.


Recent outbreaks in the northeasterly Heilongjiang province and Jilin city have contributed to fears of other fresh outbreaks in China.

On Friday, the mainland reported four new confirmed cases for May 14, the National Health Commission (NHC) said in a statement on Friday. All were locally transmitted.

“The epidemic situation is now fragmented domestically, but the task of preventing a rebound of the epidemic remains arduous,” Zeng Yixin, a vice minister at the NHC, told a news conference.

“The epidemic situation abroad is still severe and complex, and the pressure to defend against the outside continues to increase,” Zeng added, referring to cases of citizens returning from abroad infected with the virus.

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China has stopped foreigners entering as a precaution against imported infections.

Zeng also said some COVID-19 vaccines were set to complete their second-phase clinical trials in July.

Confirmed cases in mainland China stand at 82,933 and the death toll at 4,633. China does not disclose numbers of confirmed asymptomatic cases or include them in its tally.

Reporting by Xihao Jiang, Brenda Goh, Engen Tham, Wang Jing, Lusha Zhang and Ryan Woo; Editing by Simon Cameron-Moore, John Stonestreet and Kevin Liffey

Our Standards:The Thomson Reuters Trust Principles.

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