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Original title: Many local epidemic sources have been found across the country, and they all have something in common!
In recent months, local epidemics have broken out in many parts of the country and the source of the infection has always been of concern to everyone.
On January 28, Jilin Tonghua notified the source of the epidemic. After sorting, the Health Times found that many local epidemic sources across the country have a common characteristic: “asymptomatic infected people.” Furthermore, most of them involve cross-border and cross-regional transmission.
The source of the epidemic in many places: “asymptomatic infected people”!
1.Jilin Tonghua: Asymptomatic infection imported from Heilongjiang province
On January 12, the new corona epidemic began in Tonghua City, Jilin Province. As of midnight on January 29, the city of Tonghua had a total of 224 confirmed cases and 1 death.
On January 28, the “Jilin Prosecutor’s Office” announced that this round of the epidemic in Tonghua City was caused by Lin Moumou, a member of the Heilongjiang nationality, who went to Dongchang District, Tonghua City, to promote the sale of their products. Lin Moumou is the source of infection in Tonghua City.
Lin Moumou was an asymptomatic infection from New Crown Pneumonia imported from Heilongjiang Province. On January 5, he was infected with an asymptomatic infection from Heilongjiang Province while traveling on a train. Later, he went to the “Yuansheng Quality of Life Workshop” in Tonghua City for training and lectures, leading to group infections.
Outside the gate of the Yuansheng Quality Health Center in Tonghua City, several staff members from the disease control department are working, Image according to Xinhua News Agency2.Beijing Shunyi: Asymptomatic infected people imported from abroad
On December 23, 2020, a new corona epidemic occurred in Shunyi District, Beijing. On December 30, 2020, at a press conference on prevention and control of the new corona epidemic in Beijing, Pang Xinghuo, deputy director of the Beijing Municipal Center for Disease Control and Prevention, presented that evidence obtained from Field investigations suggested that the local clustered epidemic in Shunyi district was a single chain of transmission.
It was preliminarily determined that the source of the infection was a newly imported case of asymptomatic infection reported on December 26. You are an Indonesian citizen who has lived in Indonesia for a long time and entered Indonesia on November 26, 2020.
After 14 days of isolation in Fujian and a negative nucleic acid test, he arrived in Beijing on December 10, where he lived in Shunyi District. After arriving in Beijing, it was extended to the tenants of the shared house, case 2 and case 3 of the staff of the Shunyi Hualian Supermarket during the purchase.
3.Qingdao, Shandong: Two Asymptomatic Dagang Infections
In October and November 2020, a new corona epidemic occurred at Qingdao Chest Hospital. On October 16, 2020, it was announced at the Qingdao City epidemic prevention and control press conference that the joint national and provincial expert group determined that the new corona epidemic in Qingdao was a hospital cluster epidemic. .
The source of infection came from two asymptomatic infected people in Dagang. It was a clustered epidemic caused by two infected people sharing a CT room with ordinary patients.
Currently, asymptomatic infections are only detected by tests
Regarding “asymptomatic infection becomes a source of infection”, the “New Coronavirus Pneumonia Diagnosis and Treatment Plan (Eighth Edition Trial)” issued by the National Health Commission clearly states:
“The source of infection is mainly patients with novel coronavirus infection and asymptomatic infection. They are infectious during the incubation period and are highly infectious within 5 days after the onset of the disease.”
Asymptomatic infections include two groups of people: one is the positive nucleic acid test, but is in the incubation period, the second group is the true asymptomatic infection. When infectious diseases are prevalent, many patients have hidden infections.
Photo from “The role of asymptomatic people with novel coronavirus pneumonia in the spread of the epidemic and prevention and control strategies”Wang Guiqiang, a member of the expert team of the National Health Commission and director of the Department of Infectious Diseases of the First Hospital of Peking University, presented at a meeting of the State Information Office on April 27, 2020 that the problem The most important of the asymptomatic infections is actually infectious.
We believe that its contagiousness is clear, and it is treated the same as ordinary patients and it is contagious. The infectivity during the incubation period is relatively stronger, while the viral load of asymptomatic infections is generally lower, but this is only a relative number and does not represent the relationship between infectivity and non-infectivity, thus for asymptomatic infections some of them can become infected during the incubation period and eventually become patients, so isolation and observation are very important.
Wang Guiqiang said that only through tests can asymptomatic infections be found. So my country is now very clear, emphasizing large-scale nucleic acid testing, hoping to detect these asymptomatic infections as soon as possible. At present, we carry out routine inspections when we return to China from abroad, and it is precisely this routine inspection that has found many asymptomatic infections. We also carry out general screenings for the general population and high-risk groups, with the aim of finding these asymptomatic infections, isolating and observing them in time, and avoiding further spread.
Nucleic acid detection, photo by Cao Zihao /The U.S. Centers for Disease Control and Prevention has issued a report stating that more than half of new coronavirus infections in the United States are caused by the transmission of asymptomatic infections, showing that the Transmission power of asymptomatic infections is also changing. ④
Regarding the recent increase in the number of asymptomatic infections, Li Jun, director of the Department of Infectious Diseases at the Jiangsu Provincial People’s Hospital, said in an interview with a Health Times reporter on January 24 that the first reason is that our tests they are becoming more complete and asymptomatic. The infected persons are all on active screening and, secondly, some changes may be due to the pathogenicity of the virus. For example, the existing case proves that an infection of several generations from the source has been infected and subsequent infections are mild or asymptomatic. ⑤
What should we do to deal with asymptomatic infections?
1.Wear a mask, wash your hands frequently, and ventilate frequently
The best way to protect yourself and others is to wear a mask correctly and wash your hands frequently. Especially when the Spring Festival is approaching, you should wear a mask in tight spaces like high-speed trains and rails.
Also, the house must be cleaned frequently to disinfect it. At the same time, the room in the house should be opened frequently to ventilate. Open windows to ventilate at least twice a day, at least 15-20 minutes each time.
2.Keep a distance of 1 meter and avoid sharing items
The new coronavirus is mainly transmitted by respiratory droplets and can also be transmitted by contact. Lin Bingliang, deputy director of the Department of Infectious Diseases at Sun Yat-sen University Third Affiliate Hospital, once said in an interview with the Health Times that so-called “contact transmission” refers to contact with items contaminated with viruses, such like elements, secretions and excrements used by infected people. If you do not pay attention to personal hygiene, it can easily invade the body if it touches the mucous membranes of the eyes, mouth and nose. Maybe because you touched the same doorknob with the incubation period or with asymptomatic patients, it may become a new incubation period spreader. ⑥
Therefore, it is better to reduce close contact, social distance is more than 1 meter, and avoid sharing some items.
3.Individual dishes, boil 30 minutes over 56 ℃
The disease comes from the mouth, so you have to eat separate plates and use public chopsticks! In addition, the dishes can be sterilized by boiling and blanching at a temperature above 56 ° C for 30 minutes.
Also, try not to eat on the train. If you must eat, it is recommended to wash your hands with soap or disinfectant before eating to reduce contact and infection.
