The number of confirmed cases of the current round of the epidemic in Jilin Province has increased significantly.
According to the Jilin Provincial Health Commission reported on the 7th, at 0-24:00 on March 6, there were 54 new locally confirmed cases in the province, and 12 new local asymptomatic infected people. At present, there are 109 locally confirmed cases in Jilin Province, of which 60 are locally confirmed cases in Jilin City.
The first to report this round of outbreaks in Jilin Province is Hunchun City, and on February 28, the first positive cases appeared in Hunchun City, Yanbian Prefecture. According to Gao Yingzi, vice mayor of Hunchun Municipal Government, according to experts, the source of the epidemic in Hunchun this round is the Aobi Kerong strain.
On March 7, Jilin City, Changchun City and other places announced the trajectory of newly confirmed cases and asymptomatic infected people respectively. At present, the relevant departments have taken control measures in the areas that may be involved in the epidemic.
Why are so many asymptomatic infected people?
Hunchun City, which was the first to report positive people, is currently under control, many communities have only entered and left, and residents have done many rounds of nucleic acid testing.
According to the office of the new crown pneumonia epidemic prevention and control working group in Yanbian Prefecture, Jilin Province, the first confirmed case in Hunchun City was an employee of an enterprise in the city, who took the high-speed rail from Hunchun to Yanji on February 28 and returned by high-speed rail on the same day. In the "10 mixed 1" landing test, the results showed that the suspected new coronavirus nucleic acid was positive, and after the state and city level review, the new coronavirus nucleic acid was positive.
According to the Central Broadcasting Network, in this round of the epidemic, Yanji City reported a confirmed case of new crown pneumonia on March 3, and a case of nucleic acid positive was found in the "due diligence" population.
Since then, including Jilin City, Changchun City, Gongzhuling City and other jilin provinces have reported the discovery of positive nucleic acid personnel of the new crown virus, and from the notification point of view, the new asymptomatic infected people in Jilin Province have remained in double digits almost every day: on March 4, 24 new asymptomatic infected people were added in Jilin Province, on March 5, 36 new asymptomatic infected people in Jilin Province, and on March 6, 12 new asymptomatic infected people were added in the province...
Why are there so many asymptomatic infected people in this round of the epidemic in Jilin Province? What causes it and what does it mean? In fact, the increase in asymptomatic infections is not a recent occurrence, and the official explanation has been made before.
The "asymptomatic infected person" of the new crown virus refers to a person who has no obvious clinical manifestations: fever, fatigue, pneumonia, etc., but who has tested positive for viral nucleic acid.
According to the National Health Commission, the term "asymptomatic infected" actually covers two situations: one is the "true" asymptomatic person. Infected people test positive for nucleic acid, but after a 14-day incubation period of observation, there are no signs and symptoms that can be self-perceived or clinically recognized, and they are always asymptomatic.
This type of asymptomatic infection is also known as a latent infection. The reason for its occurrence has not yet been clearly studied, it may be because the virus is weak in virulence or the body's defense ability is strong, and the virus cannot proliferate in large quantities in the body, so the damage to tissue cells is not obvious. Latent infections may also be related to the specific nature of the virus.
However, the phenomenon of hidden infection is not unique to the new crown virus, and most diseases caused by viruses and bacteria may be "hidden". For example, studies have shown that more than two-thirds of people infected with influenza virus do not show symptoms.
The other is patients who are temporarily asymptomatic but later develop the disease. The incubation period of the new crown virus is mostly 1 to 14 days, during which the patient may have no obvious symptoms for a while.
Sooner or later, such infected people will show "symptoms", but the nucleic acid test runs faster than the symptoms, and it is not clear whether they will become ill later, so they are counted into the ranks of "asymptomatic".
Previously, He Hao, head of the Infectious Disease Department of the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, had specifically explained the increase in asymptomatic infections in an interview with "Science China", he said: "According to the law, the development of emerging infectious diseases to the middle and late stages, asymptomatic infected people like icebergs hidden under the water will be more and more, people will inevitably be exposed to a small amount of viruses, but most people will not get sick." ”
The epidemic spilled over to Hebei
At present, the number of confirmed cases of new crown pneumonia in Jilin Province has exceeded 100, and there have been cases of foreign related cases, and the containment of the epidemic has entered a critical period.
According to the news released by the Office of the Leading Group for responding to the new crown pneumonia epidemic in Qingyuan District, Baoding City, Hebei Province, on March 4, a confirmed case of new crown pneumonia was found in the district, which was detected by personnel outside the province during the independent nucleic acid testing in our district, and it was a person from Changyi District, Jilin City, Jilin Province, who came to our district.
According to the circulation information, Wang Moumou, female, 51 years old, is from Qiaotun Village, Birch Peel Factory Town, Changyi District, Jilin City, Jilin Province. On March 2, he and her husband Han Moumou set off from Jilin City by car, came to Qingyuan District on March 3, conducted nucleic acid testing independently in a medical institution, and the mixed test results were abnormal, and on March 4, the single test was positive for the initial screening, and the results were positive after the Baoding Cd-off Center for Disease Control and Prevention. The expert group combined the results of epidemiological history, clinical manifestations, laboratory tests and imaging tests to diagnose a confirmed case of new coronary pneumonia (mild). At present, the case has been transferred to the designated hospital of the city for isolation and treatment, and the close contacts and sub-close contacts traced have all been isolated for medical observation.
According to the Hebei Provincial Health Commission, at 0-24:00 on March 3, there were 6 locally confirmed cases in Hebei Province, including 4 cases in Xingtai and 1 case in Shijiazhuang. There is 1 case of asymptomatic infection in the home country under medical observation.
According to the circulation information, the confirmed cases found in the Shijiazhuang High-tech Industrial Development Zone are 17-year-old students in school. The student's household registration is Yuan Songzhuang Village, Yangerzhuang Town, Qinghe County, Xingtai City, and he is currently studying at Hebei Business and Trade School. On February 27, due to the opening of the school year, he took a private car from Qinghe County, Xingtai City to Shijiazhuang High-tech Zone.
In the early morning of March 3, after receiving the notice of Xingtai City's co-investigation, Zhang was a close contact of Zhang X (Zhang X's father), a person who was initially positive for new crown pneumonia in Qinghe County, Xingtai City; Zhang X was immediately isolated, the nucleic acid test was positive for the initial screening, and the re-examination was still positive; and then transferred by negative pressure ambulance to Shijiazhuang Designated Hospital.
According to the news of The Health Commission of Hebei Province on March 7, 9 new cases of local confirmed cases of new coronavirus (Xingtai) were added in Hebei Province at 0-24:00 on March 6, and 1 new case of local asymptomatic infection (Shijiazhuang). As of 24:00 on the 3rd and 6th, there were 35 confirmed cases in Hebei Province; 3 cases of local asymptomatic infections were still under medical observation.
The campus epidemic has not been calmed and has risen again
According to the news night flight, Jilin City found 4 cases of positive nucleic acid initial screening of the new coronavirus in the "due diligence" population on March 2, including 1 confirmed case and 3 asymptomatic infected people. According to the information, the confirmed case is a student of an experimental primary school in Jilin City, who studied in a cram school on February 19, dined out with his mother (asymptomatic infected person 1) and grandfather at noon, went to other interest classes in the afternoon, and was picked up by his mother.
At present, the case has appeared group-related cases, according to Shangguan News, from the current jilin province announced the trajectory of the new infected people, 22 people are classmates who have previously infected students.
After the outbreak of the epidemic in Jilin Province, the local government responded quickly. According to the news of the Jilin Municipal Health Commission on March 6, the Office of the Leading Group for the Prevention and Control of the New Crown Pneumonia Epidemic in Jilin City issued a notice saying that the Jilin Municipal Epidemic Prevention and Control Headquarters decided to further strengthen the epidemic control measures in urban areas (including Chuanying District, Changyi District, Longtan District, Fengman District, High-tech Zone, and Economic Development Zone) from 00:00 on March 7, 2022 to 24:00 on March 13, 2022, and all government agencies, enterprises and institutions in the city stopped work and production in principle, major primary and secondary schools, kindergartens suspended classes, and all kinds of business sites were suspended. Basic livelihood security departments such as hydropower, oil, gas, heating, and communications, as well as production enterprises that must be continuously produced, should strengthen their duty to ensure normal operation.
In addition to Jilin, Shandong Laixi has also seen a large number of students infected with the new crown virus in recent days. According to Shangguan News, on March 7, Qingdao Continued to Hold a Press Conference on the Epidemic in Laixi to report on the latest progress in epidemic prevention and control. From 0:00 to 24:00 on March 6, Laixi City added 45 new confirmed cases of local new crown pneumonia, 115 cases of asymptomatic infection, since the outbreak of the epidemic in Laixi on March 4, as of 24:00 on March 6, Laixi City has reported a total of 136 confirmed cases, 115 cases of asymptomatic infection, of which 135 cases of mild and 1 case of ordinary type, including 116 cases of students, 10 cases of teachers, and 10 cases of key population screening, have been transferred to designated hospitals.
In late February, there was a campus epidemic in Taiyuan, Shanxi, and Zhenkang, Yunnan, with people infected with new crown pneumonia, and thousands of teachers and students were in centralized isolation.
Four middle school students in Taiyuan No. 1 Middle School in Shanxi Province were diagnosed with COVID-19 and were screened for hohhot-related cases. According to Xinhua News Agency reported on February 24, Xinfu District, Xinzhou City, Shanxi Province, reported a case of positive infection with the new crown virus on the 22nd, and the patient Wang Moumou was a person who entered Hohhot, Inner Mongolia, who stayed in Taiyuan City and has now turned into a confirmed case. On the 23rd, the relevant departments of Taiyuan City further investigated and found that Wang Moumou concealed the trajectory of his trip in two schools in Taiyuan and was investigated by the Xinzhou Municipal Public Security Organ according to law.
The information is synthesized from: the official website of the Jilin Health commission, Yanbian Observation, the Central Broadcasting Network, the China News Network, the surging news, the Shangguan News, the SichuanGuan News, the news night flight, the charm of Jidong, etc
Edited | Wang Dandan
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