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Recovered, almost: Wuhan's early patients unable to shed coronavirus

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Brenda Goh, Reuters

<div class="embed-wrap"><figure data-feedback="fb:likes,fb:comments"><img src="http://sa.kapamilya.com/absnews/abscbnnews/media/2020/reuters/04/23/20200422-china.jpg"/><figcaption>FILE PHOTO: Medical personnel in protective suits wave hands to a patient who is discharged from the Leishenshan Hospital after recovering from the novel coronavirus, in Wuhan, the epicenter of the novel coronavirus outbreak, in Hubei province, China March 1, 2020. China Daily via Reuters</figcaption></figure></div>WUHAN, China - Dressed in a hazmat suit, two masks and a face shield, Du Mingjun knocked on the mahogany door of a flat in a suburban district of Wuhan on a recent morning.A man wearing a single mask opened the door a crack and, after Du introduced herself as a psychological counselor, burst into tears.&quot;I really can&#x27;t take it anymore,&quot; he said. Diagnosed with the novel coronavirus in early February, the man, who appeared to be in his 50s, had been treated at two hospitals before being transferred to a quarantine center set up in a cluster of apartment blocks in an industrial part of Wuhan.Why, he asked, did tests say he still had the virus more than two months after he first contracted it?The answer to that question is a mystery baffling doctors on the frontline of China&#x27;s battle against COVID-19, even as it has successfully slowed the spread of the coronavirus across the country.<ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/overseas/04/10/20/wuhan-wakes-up-from-covid-19-nightmare-to-start-again">Wuhan wakes up from COVID-19 nightmare to start again</a></li>	<li><a href="https://news.abs-cbn.com/overseas/04/19/20/director-of-wuhan-lab-denies-virus-link">Director of Wuhan lab denies virus link</a></li></ul>Chinese doctors in Wuhan, where the virus first emerged in December, say a growing number of cases in which people recover from the virus, but continue to test positive without showing symptoms, is one of their biggest challenges as the country moves into a new phase of its containment battle.Those patients all tested negative for the virus at some point after recovering, but then tested positive again, some up to 70 days later, the doctors said. Many have done so over 50-60 days.The prospect of people remaining positive for the virus, and therefore potentially infectious, is of international concern, as many countries seek to end lockdowns and resume economic activity as the spread of the virus slows. Currently, the globally recommended isolation period after exposure is 14 days.So far, there have been no confirmations of newly positive patients infecting others, according to Chinese health officials.China has not published precise figures for how many patients fall into this category. But disclosures by Chinese hospitals to Reuters, as well as in other media reports, indicate there are at least dozens of such cases.In South Korea, about 1,000 people have been testing positive for four weeks or more. In Italy, the first European country ravaged by the pandemic, health officials noticed that coronavirus patients could test positive for the virus for about a month.As there is limited knowledge available on how infectious these patients are, doctors in Wuhan are keeping them isolated for longer.Zhang Dingyu, president of Jinyintan Hospital, where the most serious coronavirus cases were treated, said health officials recognized the isolations may be excessive, especially if patients proved not to be infectious. But, for now, it was better to do so to protect the public, he said.He described the issue as one of the most pressing facing the hospital and said counselors like Du are being brought in to help ease the emotional strain.&quot;When patients have this pressure, it also weighs on society,&quot; he said.<div>DOZENS OF CASES</div>The plight of Wuhan&#x27;s long-term patients underlines how much remains unknown about COVID-19 and why it appears to affect different people in numerous ways, Chinese doctors say. So far global infections have hit 2.5 million with over 171,000 deaths.As of April 21, 93 percent of 82,788 people with the virus in China had recovered and been discharged, official figures show.Yuan Yufeng, a vice president at Zhongnan Hospital in Wuhan, told Reuters he was aware of a case in which the patient had positive retests after first being diagnosed with the virus about 70 days earlier.&quot;We did not see anything like this during SARS,&quot; he said, referring to the 2003 Severe Acute Respiratory Syndrome outbreak that infected 8,098 people globally, mostly in China.Patients in China are discharged after two negative nucleic acid tests, taken at least 24 hours apart, and if they no longer show symptoms. Some doctors want this requirement to be raised to three tests or more.China&#x27;s National Health Commission directed Reuters to comments made at a briefing Tuesday when asked for comment about how this category of patients was being handled.Wang Guiqiang, director of the infectious disease department of Peking University First Hospital, said at the briefing that the majority of such patients were not showing symptoms and very few had seen their conditions worsen.&quot;The new coronavirus is a new type of virus,&quot; said Guo Yanhong, a National Health Commission official. &quot;For this disease, the unknowns are still greater than the knowns.&quot;<div>REMNANTS AND REACTIVATION</div>Experts and doctors struggle to explain why the virus behaves so differently in these people.Some suggest that patients retesting as positive after previously testing negative were somehow reinfected with the virus. This would undermine hopes that people catching COVID-19 would produce antibodies that would prevent them from getting sick again from the virus.Zhao Yan, a doctor of emergency medicine at Wuhan&#x27;s Zhongnan Hospital, said he was sceptical about the possibility of reinfection based on cases at his facility, although he did not have hard evidence.&quot;They&#x27;re closely monitored in the hospital and are aware of the risks, so they stay in quarantine. So I&#x27;m sure they were not reinfected.&quot;Jeong Eun-kyeong, director of the Korea Centers for Disease Control and Prevention, has said the virus may have been &quot;reactivated&quot; in 91 South Korean patients who tested positive after having been thought to be cleared of it.Other South Korean and Chinese experts have said that remnants of the virus could have stayed in patients&#x27; systems but not be infectious or dangerous to the host or others.Few details have been disclosed about these patients, such as if they have underlying health conditions.Paul Hunter, a professor at the University of East Anglia&#x27;s Norwich School of Medicine, said an unusually slow shedding of other viruses such as norovirus or influenza had been previously seen in patients with weakened immune systems.In 2015, South Korean authorities disclosed that they had a Middle East Respiratory Syndrome patient stricken with lymphoma who showed signs of the virus for 116 days. They said his impaired immune system kept his body from ridding itself of the virus. The lymphoma eventually caused his death.Yuan said that even if patients develop antibodies, it did not guarantee they would become virus-free.He said that some patients had high levels of antibodies, and still tested positive to nucleic acid tests.&quot;It means that the two sides are still fighting,&quot; he said.<div>MENTAL TOLL</div>As could be seen in Wuhan, the virus can also inflict a heavy mental toll on those caught in a seemingly endless cycle of positive tests.Du, who set up a therapy hotline when Wuhan&#x27;s outbreak first began, allowed Reuters in early April to join her on a visit to the suburban quarantine center on the condition that none of the patients be identified.One man rattled off the names of three Wuhan hospitals he had stayed at before being moved to a flat in the center. He had taken over 10 tests since the third week of February, he said, on occasions testing negative but mostly positive.&quot;I feel fine and have no symptoms, but they check and it&#x27;s positive, check and it&#x27;s positive,&quot; he said. &quot;What is with this virus?&quot;Patients need to stay at the center for at least 28 days and obtain two negative results before being allowed to leave. Patients are isolated in individual rooms they said were paid for by the government.The most concerning case facing Du during the visit was the man behind the mahogany door; he had told medical workers the night before that he wanted to kill himself.&quot;I wasn&#x27;t thinking clearly,&quot; he told Du, explaining how he had already taken numerous CT scans and nucleic acid tests, some of which tested negative, at different hospitals. He worried that he had been reinfected as he cycled through various hospitals.His grandson missed him after being gone for so long, he said, and he worried his condition meant he would never be able to see him again.He broke into another round of sobs. &quot;Why is this happening to me?&quot;

Chinese doctors in Wuhan, where the virus first emerged in December, say a growing number of cases in which people recover from the virus, but continue to test positive without showing symptoms, is one of their biggest challenges as the country moves into a new phase of its containment battle.

Chinese doctors in Wuhan, where the virus first emerged in December, say a growing number of cases in which people recover from the virus, but continue to test positive without showing symptoms, is one of their biggest challenges as the country moves into a new phase of its containment battle.

Recovered, almost: Wuhan's early patients unable to shed coronavirus

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Recovered, almost: Wuhan's early patients unable to shed coronavirus

Brenda Goh,

Reuters

Published Apr 23, 2020 01:05 PM PHT

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