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郑州市男士spa水疗保健休闲会所〖微10596229〗-A man living in Hong Kong has been infected by the novel coronavirus for the second time, according to a research by the University of Hong Kong.,"The case illustrates that reinfection can occur even just after a few months of recovery from the first infection. Our finds suggest that SARS-CoV-2 may persist in humans, as is the case for other common cold-associated human coronaviruses, even if patients have acquired immunity via natural infection or via vaccination," the researchers told CNN.,Experts said the finding was not unexpected, given the millions of people who have been infected worldwide.,"Natural infection created immunity that prevented disease but not reinfection," she said.,Cases of presumed reinfection have been reported previously, but none have been confirmed with rigorous testing. Recovered people are known to carry viral fragments for weeks, which can lead to positive test results in the absence of live virus.,He tested positive again during the entry screening at the Hong Kong airport on Aug 15 when he returned from a trip in Spain via the United Kingdom. The man was hospitalized again and remained asymptomatic, said the research team of the University of Hong Kong.。,Cases of presumed reinfection have been reported previously, but none have been confirmed with rigorous testing. Recovered people are known to carry viral fragments for weeks, which can lead to positive test results in the absence of live virus.,;,,The patient is believed to the world's first documented case of reinfection by SARS-CoV-2, the virus that causes COVID-19.。。。。。‘’、...。-广州市私人伴游模特〖微10596229〗-