Why did Zhangjiajie become the second largest source of infection after Nanjing? |New Coronary Pneumonia|Nanjing|Jiangsu_Sina News

Original title: Why did Zhangjiajie become the second largest source of infection after Nanjing?

The epidemic in Nanjing continued. According to official data, from July 20 to 00:00 on July 29, the number of local confirmed cases in Nanjing exceeded 170, and the epidemic spilled over to 15 provinces and 26 cities. Among them, the Nanjing-associated epidemic that spread from the Zhangjiajie scenic spot has spread to four provinces and seven cities.

The Red Star News reporter combed the official results and showed that there were 8 people who watched the performance in the same theater in Zhangjiajie, on July 22 and July 24, only two days apart. And comparing the whereabouts of the confirmed cases and 3 asymptomatic infected persons in Dalian on July 27, it was found that there were overlapping locations in Zhangjiajie Forest Park, Tianmen Mountain and other scenic spots. At present, Zhangjiajie has confirmed a local case, and all people will be shut down in a confined place.

Why has Zhangjiajie become the second largest source of infection after Nanjing? Will this round of epidemic trigger the second wave of domestic epidemics? Red Star News reporters talked to experts and conducted in-depth discussions on the spread, prevention and control of this wave of epidemics.

　　[同一剧场]

A total of 8 people watched the performance, two days apart

As of 24:00 on July 29, Nanjing City had reported a total of 184 confirmed local cases and 1 local asymptomatic infection. Within a week, this round of epidemic has spread from Nanjing Airport to many parts of the country. The Red Star News reporter noticed that some of the spilled infections did not have a history of living in Nanjing, but they had one thing in common-they had been to a theater in Zhangjiajie to watch a performance. Since then, the results of the circulation of multiple cases pointed to Zhangjiajie. For a time, Zhangjiajie became Nanjing. The second largest infection place outside the country.

According to official data released by the Red Star News reporter, as of July 29, many cases and asymptomatic infections are related to Zhangjiajie, involving Beijing, Liaoning, Jiangsu, Hunan and other provinces and cities.

The first case associated with Zhangjiajie was an asymptomatic infection in Dalian who passed through Nanjing Airport, and a theater they had visited has also become a key place for subsequent transmission.

According to the “Dalian Release” news, on July 26, Dalian City found 3 cases of positive nucleic acid test results in the active screening of personnel passing through Nanjing Lukou Airport, which were determined to be asymptomatic infections. The results of the flow investigation showed that the three asymptomatic infected persons all took a flight from Dalian to Zhangjiajie via Nanjing Lukou International Airport on July 17.

According to the Zhangjiajie City New Coronavirus Infection Pneumonia Prevention and Control Headquarters Office, at about 4 pm on July 17, the above three asymptomatic infections arrived in Zhangjiajie by plane and took a taxi to the Crowne Plaza Wulingyuan Hotel. From July 17th to 23rd, three people played in scenic spots near Zhangjiajie. Among them, they watched the performance at the charming Xiangxi Theater at 5:25 pm on July 22nd.

At the same time, another tourist from Dalian who was diagnosed on July 27 appeared in the charming Xiangxi Theater. The tourist went to Zhangjiajie on July 20. According to the Dalian Municipal Health Commission, the above-mentioned Dalian tourists took the initiative to investigate the Nanjing-related cases of asymptomatic infections in Dalian on July 26. They watched the same scene (approximately 18:00 to 19:30) in Zhangjiajie on July 22. show. Attendance at the performance are all seats A in the middle, next to each other.

Also visited this theater, there is a company in Huai’an, Jiangsu, with a total of 67 employees. On July 22, the company organized employees to travel to Zhangjiajie, Hunan. On July 24, after visiting Tianmen Mountain and Forest Park, they went to the charming Xiangxi Theater to watch the performance. The time difference between them and Dalian tourists was only two times. Today, according to the “Huai’an Release” news, there are currently 3 employees of the company and 1 tour guide from the travel agency who tested positive for the new coronavirus nucleic acid.

　　[相同景区]

Have been to Tianmen Mountain, Forest Park and other places

In addition, among the related cases in Zhangjiajie, some of the related cases coincided with the scenic spots visited by Dalian uninfected patients and confirmed patients in Zhangjiajie from July 21 to 24.

According to local official reports, two tourists from Beijing went to Zhangjiajie on July 20, and two tourists from Chongqing went to Zhangjiajie on July 21. As of the afternoon of July 29, the itinerary of two Zhangjiajie-related cases in Beijing has not been announced yet.

The Red Star News reporter combed the current survey and found that the three asymptomatic infections in Dalian, who came to visit the earliest, visited Tianmen Mountain, Zhangjiajie Forest Park, Grand Canyon and other places from July 18 to 22. The Dalian tourists diagnosed on July 27 also visited Zhangjiajie Forest Park, Grand Canyon, Tianmen Mountain and other places from July 21 to 24.

Almost at the same time, 4 tourists from Chengdu visited Zhangjiajie, Tianmenshan Forest Park, Grand Canyon and other places from July 20 to 23; the time of 2 tourists from Chongqing was arranged at the same time as the tour of Dalian confirmed cases on July 27. The time and space coincide, and they will be played in Zhangjiajie Forest Park, Tianmen Mountain and other places from July 21 to 24.

In addition, comparing the whereabouts of the confirmed cases and 3 asymptomatic infections in Dalian on July 27, 6 tourists from Chongqing and Beijing have visited Zhangjiajie Forest Park, Tianmen Mountain and other scenic spots, especially from July 21 to 24. During this period, the 6 tourists and Dalian’s confirmed cases on July 27 have been to Zhangjiajie and Tianmen Mountain.

1 local case confirmed in Zhangjiajie

Shut down all personnel gathering in a confined place

Suddenly, Zhangjiajie’s prevention and control work became tense. On July 28, Zhangjiajie City’s New Coronavirus Infection and Pneumonia Prevention and Control Work Headquarters Office issued an announcement that the first scene on the evening of July 22 (18:00-19:00) Glamorous Xiangxi All audiences belonged to high-risk groups, requiring immediate attention Report to the local community (village) or disease control agency, and cooperate with the implementation of centralized isolation and nucleic acid testing prevention and control measures.

In response to issues such as epidemic prevention and control in the scenic spot, on the afternoon of July 29, the Red Star News reporter called the Zhangjiajie Visitor Center. The relevant staff said that Zhangjiajie only accepts tourists from low-risk areas, and the health code and big data itinerary code must be presented when entering the scenic spot. Facial mask. The Red Star News reporter discovered that, at present, all performance venues in Zhangjiajie have been closed. According to CCTV News, all scenic spots in Zhangjiajie City will be closed on July 30.

According to the Zhangjiajie Daily News, Zhangjiajie has initiated nucleic acid testing and screening for tourists and residents in key towns in Yongding City, Wulingyuan District, Cili County, and Sangzhi County. As of July 29, the city has completed nucleic acid testing and sampling of 83,115 people and reported 1 confirmed case.

According to the official WeChat public account of Zhangjiajie Daily, “Zhangjiajie on the palm”, the confirmed case is Yang XX, female, 38 years old, currently living in Group 1 of Wangjiazhai Village, Guanliping Street, Yongding District, Zhangjiajie City. On July 29, the nucleic acid test of Zhangjiajie People’s Hospital was positive, and the city-level expert consultation was a confirmed case (common type). The Red Star News reporter noted that on the evening of July 29, according to a press conference on epidemic prevention and control held in Zhangjiajie City, the woman was a staff member of the office of a travel agency in Zhangjiajie City. Is this case related to a previous case related to Zhangjiajie? The reporter interviewed an official authoritative person about this, and the other party said that he would have to wait for official notification.

Subsequently, the Zhangjiajie City New Coronavirus Infection and Pneumonia Prevention and Control Work Headquarters issued the “Notice on Stopping People Gathering and Operating Activities in Confined Places”, requiring tourist shopping places, movie theaters, private theaters, theaters, KTVs, dance halls, and Internet cafes throughout the city. , Chess and card rooms, underground shopping malls, foot washing and massage places, religious gathering places and other confined places.

In addition, according to the Zhangjiajie Center for Disease Control and Prevention reminded the majority of tourists and friends, according to the requirements of the Zhangjiajie Epidemic Prevention and Control Headquarters, in order to reduce the flow of people, prevent the spread of the epidemic, and ensure health and safety, tourists and friends are requested not to visit Zhangjiajie for the time being.

Expert interpretation

The conclusion of the second round of the epidemic is too early

Peng Zhiyong, director of the Department of Critical Care Medicine at Zhongnan Hospital of Wuhan University, told Red Star News that Zhangjiajie became the second place of infection outside of Nanjing, mainly because the locality is a tourist city. In addition to the peak tourist season, foreign tourists have surged, and locals have insufficient awareness of epidemic prevention and control. There are risk factors such as not wearing a mask, so it is very easy to spread the virus.

“The main place of communication in Zhangjiajie is a local theater. It is said that there are more than 2,000 people watching a performance. Such a large gathering event is also in a confined space. If the protective measures are not in place, for example, when I went to Hunan before, I found many locals. People don’t wear masks anymore. Once the awareness of prevention and control is relaxed and they are directly exposed to the air, the risk of infection will increase.” Peng Zhiyong said.

Why is it also contagious in open space scenic spots? In this regard, Peng Zhiyong believes that the infectious virus in this round of epidemic is Delta virus, which is very contagious. “Even in an open space, there is a possibility of being infected. For example, when they pass by, neither person wears a mask. , It is extremely vulnerable to infection.”

Will the Zhangjiajie epidemic continue to ferment? Peng Zhiyong said that for the time being, no conclusion can be drawn. Tourist cities like this kind should become the focus of prevention and control. Local prevention and control measures should be taken. Before the end of this round of epidemic, the public should try not to go to crowded areas and wear masks when going out to prevent and control the epidemic. Consciousness must not be relaxed.

One of the issues that the public is most worried about this round of the epidemic is whether it will trigger a second wave of domestic epidemics?

Peng Zhiyong told the Red Star News reporter that the current situation of the epidemic is indeed severe, but it is too early to make a conclusion on the issue of “whether it is the second round of the epidemic”, and we need to observe the daily number of new outbreaks in each region of the current round of the epidemic to be able to judge.

Zhang Wenhong said that if Lukou Airport is regarded as an outbreak point, the current cases in other provinces and cities are basically found in the screening of relevant key populations, and they are still on the transmission line related to Lukou Airport. In other provinces and cities, no source-free cases of community proliferation have been found out of the tracking route of the airport, which indicates that the epidemic is still under control. If there are no more second- and third-generation cases in the provinces and cities in the following 1-2 weeks, the scale of this round of epidemics will still be limited to Nanjing.

Zhang Wenhong believes that there have been more clusters of cases related to the airport in the Lukou area of ​​Nanjing, but there have not been many passive community cases in other areas of Nanjing, indicating that it is still in the pre-dispersion stage of a large-scale community. Nanjing has already adopted strict prevention and control measures. If the control is effective, it can be controlled within a few weeks. You should have confidence in this. The key is the follow-up 1-2 weeks of surveillance. If there are more cases that are not directly related to Lukou Airport, it indicates that the scale of the epidemic will expand.

The Red Star News reporter noted that in this round of the epidemic, the spread, prevention and control of mutant strains is also a topic of high public discussion.

Qiu Haibo, an expert in the medical treatment team of the Jiangsu Working Group of the Joint Prevention and Control Mechanism of the State Council, deputy secretary of the Party Committee of Zhongda Hospital Affiliated to Southeast University, and an expert in critical care medicine, said that in general, the “Delta” strain has two characteristics worth noting: First, ” After the “Delta” strain is infected, the patient’s nucleic acid viral load is relatively high, indicating that its transmission and infectivity are relatively strong; second, after the “Delta” strain is infected, its clinical characteristics are different from the previous ones. . “In the past, many patients with new coronary pneumonia did not have fever symptoms. After the infection of the’Delta’ strain, the proportion of fever has been lower, especially in patients with early fever, and the symptoms of patients are more atypical. Early symptoms may only be manifested as Fatigue, olfactory disturbance, or mild muscle soreness, one-third to one-half of patients may have no symptoms, so the symptoms are very atypical.”

“This has led to some patients not knowing enough about it. Even if they are infected, they can’t even catch a bad cold. They seem to be fine. The clinical symptoms are atypical and the infectiousness is strong, which makes it very easy to spread.” Qiu Haibo said.

In this regard, Peng Zhiyong told the Red Star News reporter that due to the high transmissibility and viral load of the “Delta” strain, in reality, the scope of the definition of close contacts needs to be expanded compared with the previous ones. It is necessary to be in the same confined space to be defined as a close contact, but now maybe this scope should be expanded to the same building.” However, Peng Zhiyong believes that since the time for the mutant strain to enter the country is still short, the definition of “close contact” is still It takes a period of observation.

Red Star News reporter Luo Danni, Shen Xingyi and intern Lin Qianbing

Editor in charge: Jia Nan SN245