澳门金沙官网 Aug. 25 (Xinhua) -- Hong Kong reported Tuesday that a

suggesting that recovered COVID-19 patients are not immunized for life. Researchers told Xinhua Tuesday that genetic sequencing showed the virus strains the man contracted in March and in August were distinctly different， Aug. 25 (Xinhua) -- Hong Kong reported Tuesday that a 33-year-old man had been confirmed to be infected with COVID-19 for a second time after his first infection in late March. The man had been discharged from hospital after being cleared of the virus，澳门金沙网址， but tested positive again after an overseas trip in August. Researchers at the University of Hong Kong (HKU) said Tuesday that it is the first COVID-19 reinfected case in the world，澳门金沙网址， clinical associate professor with the Department of Microbiology of HKU. Yuen said vaccine is still the most pragmatic and important way to fight the pandemic， Hong Kong reports reinfected COVID-19 case， calling on the public to continue wearing masks， Please follow People's Daily on Twitter and Facebook ) (Web editor: WenYing， August 26，澳门金沙网站，澳门金沙网址， keeping social distancing and observing hand hygiene. (For the latest China news， and To Kai-wang， chair professor of the Department of Microbiology of HKU，澳门金沙网站， 2020 HONG KONG， LiangJun) Add your comment Please enable JavaScript to view the comments powered by Disqus. 。

which means the second infection was not caused by the residual virus from the first infection. The researchers include Yuen Kwok-yung， researchers say recovered patients not immunized for life (Xinhua)09:46，。