From 0:00 to 24:00 on June 27, Beijing newly reported 14 local confirmed cases, 1 suspected case, and 3 asymptomatic infections. Among the newly confirmed cases, there were 10 cases in Fengtai District and 4 cases in Daxing District. Since June 11, there have been more than 300 new cases in Beijing.
In the 24 hours starting on the evening of June 25, the "News Survey" was divided into multiple paths and recorded the epidemiological investigation work in Fengtai District and Daxing District.
Song Xin is an epidemiological investigator in the Center for Disease Control of Daxing District. Since June 11, she has worked with more than 100 colleagues in her work unit to work overtime, which is more busy at night than during the day.
That night, Song Xin was assigned the task. The People’s Hospital of Daxing District had just detected a fever patient with a positive nucleic acid of a new coronavirus. Song Xin and colleagues Xue Han and Pan Feng formed a small team to spread this patient as quickly as possible. Medical investigation.
Song Xin: Since it is an infectious disease, it will not come out of thin air. It must have a source of infection. Where did it come from? We must find out the source of this infection, and we must control this source of infection to prevent it from spreading to more people. As long as there is something suspicious, we respond as if we were treating a confirmed case. I prefer to do our work in vain, but also to ensure that infectious diseases cannot spread.
Epidemiological investigation is a race against the virus. Song Xin and his colleagues can figure out the trajectory of the patient's movements earlier, and can block the possibility of virus transmission earlier.
In the two weeks since June 11, Song Xin used protective clothing three times a day for more than three hours at a time to work in June in midsummer. Compared with the sultry heat during the day, it was slightly better at night.
Song Xin: Because you are now a positive screening test, according to the Law of the People’s Republic of China on the Prevention and Control of Infectious Diseases, you should cooperate with us in the investigation. You have a legal obligation to refrain from telling lies and telling us truthfully.
Patient: understand.
This patient had diarrhea the day before and had a fever at 9 am on the 25th. He also couldn't tell clearly under what circumstances he was infected by which person or environment, which required the mobilizer to find the traces of the source of the infection in his 14-day activity track.
Xue Han, a transcriber: Because it was contagious 4 days before the onset, that is to say, the person contacted by this patient 4 days before the onset was the next 14 days, and it tended to focus on protecting a group of people.
If a patient is used as the center to divide the population, close contacts and general contacts are the focus of every epidemiological investigation. Finding them and managing them in order to effectively block the virus-to-human chain is the focus of epidemic prevention and control. .
Ordinary people have to recall where they have been in the past 14 days, who they have contacted, how they have contacted them, and how many people are around. The transcriber will be prompted by the respondent's WeChat payment record and other information.
Song Xin: Have you been fined by the police?
Patient: Yes.
Song Xin: How many traffic police?
Patient: One.
Song Xin: A traffic police stopped, right?
Patient: Yes, there is an uncle beside him.
Song Xin: Fighting for you?
Patient: The uncle came up and asked what happened, just that.
Song Xin: Look at the lively, right? Don't you know?
Patient: I don't know.
Contacted but not known, such people are often people who need to spend a lot of energy to find and manage in epidemiological investigations. How to find this lively uncle? Song Xin’s colleagues and members of the epidemic clue tracking team will continue to improve the tracing of the tune based on these preliminary clues.
How to track and track? Zhang Yong, the leader of the tracking team, said that taking a person to eat at a restaurant from 9 to 10 pm as an example, as long as you know which restaurant, each department of the linkage mechanism will find the clue head through portrait recognition, barcode scanning transaction records, etc. , And then push down step by step, and finally find out the close contact.
To complete a complete epidemiological survey report, interviewing patients is the most basic first step. A person's 14-day trajectory restoration often takes three or four hours.
That evening, Song Xin and his colleagues conducted interviews for more than three hours. When they walked out of the ward, it was already half past one in the morning. Because he couldn’t take the paper that was brought into the isolation ward, Song Xin and his colleagues had to use their mobile phones to take a picture, and then return to the office and then enter the computer to form a report.
As of 1:30 in the morning, Song Xin’s work was 30% complete and 70% had to be completed that night.
Song Xin: It was finished within 24 hours, but we can’t wait. Because there are many cases and urgent cases now, we may be able to spread one more close contact person to more people outside in one minute, so we need to form a report in time, control the close contact person, and then pursue him further Who is the source of infection.
On this night, while Song Xin was out and doing tune-ups, there were 17 work teams rushing to different places in Daxing District to carry out tune-up interviews, sample collection, and environmental killing.
That night, Chen Dating and his colleagues received the task of collecting samples from a small supermarket, because a patient who had been diagnosed had not yet found the source of infection. Judging from the formation of a preliminary report, this supermarket is his frequent At the entrance and exit and shopping, the supermarket is currently closed.
Chen Dating and colleagues sampled more than 20 samples from high-risk locations such as refrigerator handles, electronic scales, and cash desks in supermarkets, trying to find a way to spread the virus.
Just 200 meters away from the small supermarket where Chen Dating just sampled, colleagues in the killing group are disinfecting another vegetable and fruit supermarket that has completed sample collection. In the brightly lit office building of the CDC, the other epidemic prevention and control teams are also racing against time, and every second counts.
Gan Yadi, deputy director of the Center for Disease Control and Prevention of Daxing District: Our people can stay connected to bed for 24 hours. As long as there is an epidemic, the epidemic is a command, and prevention and control is a responsibility. The focus of our work is always the same. We must improve or guarantee the quality of our epidemiological investigations, provide the government with complete and detailed patient activity information, and lay the foundation for the follow-up prevention and control work.
Hu Yuanlian, a member of the epidemiological investigation team of the Center for Disease Control of Fengtai District, at 1 pm, she received a new assignment.
After 20 minutes, the three-member rheology group set off on time. The target of the current transfer is a case undergoing medical observation. When docking with the director of the Hospital of Integrated Traditional Chinese and Western Medicine in Fengtai District, the tune-up team got the latest news about the case.
Some of the transmigration subjects have just been diagnosed and are about to be transferred to hospital, which means that the investigation time is urgent here.
The immigrants must be strictly protected before entering the polluted area. While waiting outside the door, Hu Yuanlian's glasses had begun to fog and blur.
After confirming with the ward doctors, Hu Yuanlian and colleagues first conducted an epidemiological investigation on the cases to be transferred to the hospital.
Hu Yuanlian: Are you a merchant of Xinfadi (market)?
Patient: Yes
Hu Yuanlian: Are you on the ground floor?
Patient: Ground floor.
Hu Yuanlian: What do you sell?
Patient: Aquatic products.
Because the mobile phone number obtained before was wrong, the on-site rheology of the patient was relatively detailed by the rheology team, including the type of seafood sold, the situation of family members and close contacts, the structure of the family house, the nucleic acid detection situation, and the Isolation status, type of masks worn during transit, etc.
Another team member of the team is also working on the team.
For this target, the trafficker mainly investigated the health status, nucleic acid detection process, and isolation status at the isolation point. The target of this circumstance is the operator of the new market. After the outbreak, they were first quarantined at the isolation point, and then transferred to Fengtai District Integrated Chinese and Western Medicine Hospital for medical observation and further testing.
At 3:30 in the afternoon, after more than an hour of epidemiological investigation, the two teams working at the same time basically completed the on-site relocation.
At the end of the live streaming, Hu Yuanlian and colleagues hurried back to the Fengtai District CDC. They will continue to make additional investigations and form a preliminary streaming report on today's streaming content.
At the same time that the tune-up team rushed to the CDC, another group of people should also be ready to go
Huang Ruting, Chief of the Disinfection Section of the Disease Control Center of Fengtai District: We generally get a report of the circumstance first, take a look at the place where the case is active, and then determine which place is an epidemic source we need to eliminate Carry out a terminal disinfection at the source.
The killing team members are going to the staff home of the restaurant of "Old Zhengzhou Braised Noodle House" where the epidemic occurred. At the scene, the staff of the neighborhood committee was already waiting for them.
Huang Ruting, Section Chief of the Disinfection Section of the Disease Control Center of Fengtai District: The first thing to be solved at the scene is the entry problem. Generally, the patient has already arrived at the hospital, and then his family close contact has also been transferred to the centralized isolation point, so there is no one at home. We want to ask the neighborhood committee or the street to help coordinate to get the key, so that we can enter the door to carry out disinfection work.
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Xie Junqing, Chief of Information Statistics Section of Fengtai District Disease Control Center, she is responsible for two groups that are connected with the flow control work before and after: epidemic monitoring group and close contact group.
The epidemic surveillance team that Xie Junqing is responsible for is the starting point of the epidemiological work. After they have monitored, verified, and counted the cases, they handed it over to the epidemiological investigation. The tune-up group sorted out the information of the close contacts, and returned it to the close contact group to take charge of the connection.
Yang Xiaoxing, head of the Fengtai District Center for Disease Control and Prevention, determined that the close contact was pushed forward 4 days from the time of diagnosis of the case. From that node, the person he contacted did not have effective protection within a meter of close contact Yes, this is judged to be a close contact, and this time is critical.
According to the requirements for the prevention and control of the new crown epidemic, close contacts need to be quarantined.
In order to manage the isolation points, the Fengtai District Health and Health Commission established a special class of isolation points, which consists of 11 people. Yang Xiuquan is the person in charge of the special class at the isolation point.
The main task of the special class of isolation points is to be responsible for data statistics, health monitoring, killing guidance and supervision and inspection of isolation points.
Yang Xiuquan, the person in charge of the special class of Fengtai District Isolation Point: 11 of us have more than 20 people working because the working hours should be more than 16 hours. More of our work is actually service isolation points. At present, there should be 140 medical staff in more than 30 isolation points. Each isolation point needs to face the emotional impact of 300 or 500 people. They also have to give them meals, and often clean them, and answer all their questions. In fact, they are more stressed.
At 10 o'clock in the evening, half of the 13 people's laboratory were left behind, and Dong Xiaogen, chief of the microbiology laboratory of Fengtai District CDC, and everyone were waiting for the nucleic acid detection task in the middle of the night.
Nucleic acid samples are constantly being sent here in the corridor outside the laboratory of the testing department.
Most of the samples sent to the detection department of the CDC come from key populations, close contacts, highly suspected cases, and people or environments where the government requires emergency nucleic acid testing.
Dong Xiaogen, Chief of the Microbiology Inspection Section of the Fengtai District CDC: We are more often rushing for speed. Some anxious samples may be made in small quantities. My machine can do more than 90 at a time. For six, I have to transfer an hour and an hour and a half.
According to Dong Xiaogen, the testing department adopts the strategy of "rushing speed during the day and testing volume at night". After 10 pm, when there is no emergency test, samples will be sent for mass testing.
There are 4 nucleic acid detection equipment in the detection department of the CDC in Fengtai District. Dong Xiaogen said that this can meet the current detection volume of samples. However, because the process of extracting nucleic acids must be manually operated, the situation of personnel "continuing rotation" must still be maintained for a period of time.
At 4 a.m., Section Chief Dong Xiaogen came outside the laboratory. The tester is about to come out of the laboratory. He wants to determine his health...