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郑州市如家酒店特服美女〖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.,,,,,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.。,,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.;,"Patients with a previous COVID-19 infection should also comply with epidemiological control measures such as universal masking and social distancing," they said.,"Natural infection created immunity that prevented disease but not reinfection," she said.。。"The second infection was completely asymptomatic – his immune response prevented the disease from getting worse," Akiko Iwasaki, an immunologist at Yale University was quoted as saying by New York Times.。"The second infection was completely asymptomatic – his immune response prevented the disease from getting worse," Akiko Iwasaki, an immunologist at Yale University was quoted as saying by New York Times.。But the Hong Kong researchers sequenced the virus from both of the man's infections, and found significant differences, suggesting that the patient had been infected a second time.。"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.‘’The findings also show that people who have had coronavirus already should nonetheless get vaccinated if and when a vaccine becomes available, the researchers was quoted as saying.、...。-天津市维也纳酒店特服美女〖微10596229〗-