Yesterday, Nanjing announced a case of asymptomatic infection of the new coronavirus imported from abroad.
After being released from quarantine, it was found that nucleic acid was positive.
was negative for three times before quarantine. Some classes in schools have been suspended for observation.
. Zhou Mou, male, 19 years old, entered the country from the United States on August 11, and was controlled to be transferred to a designated hotel for centralized isolation and medical observation. During the isolation period, the results of both nucleic acid tests were negative. After was released from quarantine, he returned to his residence in Jianye District.
In accordance with the relevant regulations on health tracking and management of incoming personnel in Jiangsu Province after they were released from quarantine, they underwent nucleic acid tests on September 1, and the result was negative; they received nucleic acid tests twice on September 8 and 9, and the result was positive. They have been promptly admitted to Nanjing Public Health Center for observation, with no discomfort symptoms, and the CT test is normal. They are imported asymptomatic infections from abroad.
Jianye District Center for Disease Control and Prevention quickly carried out epidemiological investigations in accordance with the standards, and took upgraded prevention and control measures for relevant close contacts. At present, the nucleic acid tests of parents who live together and other close contacts who have sampled are negative, and the nucleic acid test results of environmental samples such as their residence, activity place, etc. have been collected are also negative.
Before being quarantined again, the asymptomatic infected person worked as an assistant coach at a basketball training institution in Huacai Tiandi Shopping Center in Jianye District, Nanjing. According to China Newsweek, the shopping center is currently open, and the basketball training institution where the asymptomatic infected person is located has been suspended. This basketball training institution is called Mr.B park, and the slogan is: Foreign coach Basketball Academy, and the main training population is children aged 4 to 14.
According to People's Daily, after the incident, students who had taught in the basketball training institution in received a notice from the disease control department, and the school class where these children were located was also required to suspend classes.
At present, the pressure to prevent and control overseas imports is still very high
According to China Newsweek, a member of the National Health Commission expert group who did not want to be named said that it is not possible to judge that the case is imported from abroad or a recent infection obtained after the end of the quarantine period, and further information is needed to judge.
He further explained that if the asymptomatic infected person was indeed infected abroad after investigation and did not find positive after isolation observation, it would be the "re-positive" situation discussed earlier, that is, the virus can shed for up to 2 to 3 months, and a positive result will appear after continuous negative nucleic acid tests.
has many factors that "re-positive" include low sensitivity of detection reagents, false negatives caused by inappropriate sampling sites, or some residual nucleic acid fragments in the new coronavirus that are not disease-causing or contagious in the human body.
He stressed that such cases are not uncommon. During a round of epidemic in Beijing in mid-to-late June, a Xinfadi staff member "re-positive" 28 days after being discharged from the hospital.
This expert said that if the patient is newly infected, an epidemiological investigation is needed to find the source of the infection; if it is "re-positive", there is no need to worry too much. Wu Zunyou, chief epidemiologist of the Chinese Center for Disease Control and Prevention, also said in a recent interview with the media that they tried to culture the nucleic acid of "re-positive" cases, but they could not cultivate live viruses, which means they were not contagious. They were observed and nucleic acid samples were sampled, but they were not infected.
Generally speaking, China's current prevention and control measures to deal with overseas imports have always been very strict, and the prevention and control pressure has always been very high.
Wu Zunyou: You can travel on National Day with confidence
, but travel safety still needs to be paid attention to
is about to enter mid-to-late September, and many people have begun to plan their National Day holiday. Everyone is very concerned about whether the holiday travel is safe? What should you be wary of?
Recently, CCTV's "News 1+1" connected with Wu Zunyou, chief epidemiologist of the Chinese Center for Disease Control and Prevention, to respond to concerns.
■ In response to this, Wu Zunyou said that from the perspective of COVID-19 prevention and control, there should be no special restrictions and vigilance when traveling to various places during the National Day.
■ There is no new coronavirus in the Chinese environment now, so there is no special epidemic risk warning in travel.
But it should be noted that due to the large number of people on National Day, travel safety should still be taken seriously.
review | Chen Kai
editor | Huang Faqiang, Liu Yushu
source | Hangzhou Daily is comprehensively published from Nanjing, China News Weekly, People's Daily, and CCTV News. (Statement: The WeChat official account of "Henan Provincial Department of Education" publishes this article for the purpose of conveying more information. If there is an error in the source labeling or infringes on your legitimate rights and interests, please contact us in time and we will promptly correct, delete or handle it in accordance with the law.)
