The source of infection and transmission of 65 year old man is a mystery
Zhou Hailong, deputy chief physician of Jiangbei CDC, reported a bus communication case like a case solved, explaining how to protect himself when taking a vehicle.
Zhou Hailong introduced that novel coronavirus pneumonia was reported at the 11 point of February 5, 2020, a hospital in the District of Jiangbei District, and a patient was admitted to the hospital. The patient had detected a new crown pneumonia in stool.
The patient was a 65 year old male. He had runny nose, fatigue and other symptoms on January 23. The effect of taking medicine at home was not good. He went to the hospital on January 30. Novel coronavirus pneumonia suspected cases were initially diagnosed by medical institutions according to the mans clinical manifestations, blood routine and CT. However, the three specimens collected from the hospital were negative. In February 4th, novel coronavirus nucleic acid was detected by the experts from the higher medical institutions, and blood samples and stools were collected after consultation. In February 5th, the new coronavirus nucleic acid was detected by stool.
Zhou Hailong said that the investigation fell into a fog at the beginning, because the mans activities were very simple. He didnt go out for 14 days before the onset of the disease. Except for going out at 8 oclock every morning to take a bus to get fit and going home after 12 oclock at noon, he didnt go out for the rest of the time. With such a simple activity history, how did the man get infected?
Later, after further investigation, in addition to fitness and playing, the man also had a party of friends. But tests on these people found that they were all negative. This makes everyone confused again, which means that there may be a latent infected person who is constantly discharging the virus, and it is necessary to find out the latent Detox person.
Two people board the same bus 16 seconds apart
With the deepening of the investigation, CDC staff found that one morning the man took a bus when he went out for fitness, which happened to happen that another patient who was later diagnosed in the jurisdiction also took a bus to see a doctor in this period of time, and the bus line that the two people took had a period of overlap. Because both of them are old people, it is found by checking the card swiping records of old peoples cards that they got on the same bus at 8:47 a.m. on January 19, with a difference of 16 seconds.
Later, it was found that the man sat in the oblique rear of the patient who was diagnosed later and did not wear a mask. Although the patient who was diagnosed later wore a mask, he took the mask off midway and the windows were closed. In this way, it fully conforms to the definition of close contacts, which is a very typical case of public transport communication.
Zhou Hailong reminded the returning citizens to wear masks when traveling by bus, and also reminded the people around them to wear masks and protect themselves. On the bus, try to touch the watch as little as possible, and do hand disinfection as soon as possible after getting off the bus.
Wearing a mask can effectively block the spread of respiratory droplets
Wearing a mask can effectively block the spread of respiratory droplets. You must wear a mask in dense places. Huang Zhong, director and deputy chief physician of Yubei District CDC, for example, a confirmed case, in the course of epidemiological investigation, found that she had been shopping in a supermarket before the onset of the disease. By retrieving the supermarket monitoring screen, it was found that the patient stayed in the supermarket for 24 minutes and contacted 8 people during the shopping period. The 8 people and the confirmed cases all wore masks. The 8 people as close contacts carried out centralized medical observation. No novel coronavirus pneumonia related symptoms were observed during the observation period. After the observation period, the 8 new human crown virus nucleic acid test results were negative after the completion of the laboratory test, and the isolation was lifted.
How to do well the work of returning to work and epidemic prevention in airport, station, wharf and other densely populated places? Huang Zhong said that, first of all, a detention station should be set up according to the requirements, necessary personnel and equipment should be equipped, and prevention and control measures such as temperature screening should be strictly implemented. In case of any suspicious personnel, they should be dissuaded in time, temporarily isolated, and immediately notified to the quarantine department or local health department for timely disposal.
Specifically, first of all, reasonably organize transportation capacity, control the number of passengers, and arrange passengers to be separated and seated separately as much as possible; second, increase temperature measuring equipment to detect the temperature of passengers in and out of the port, and passengers above 37.3 u2103 shall be temporarily isolated and treated according to other relevant specifications; meanwhile, increase the frequency of disinfection of public facilities and public areas, toilet and hand washing The pool shall be equipped with disinfectant to disinfect the seats and other public facilities on a regular basis; windows shall be opened as far as possible for ventilation to keep indoor air circulation. If the air conditioning system is used, the frequency of cleaning and disinfection shall be increased.
In addition, passengers, crew members and drivers should wear masks to reduce communication and cover their mouths and noses with paper towels when sneezing; emergency areas should be set up at appropriate locations to temporarily isolate passengers with fever, dry cough and other symptoms; health protection knowledge publicity should be carried out through broadcasting, video, posters and so on.
No new confirmed cases in Chongqing for 3 consecutive days
Xia Pei, deputy secretary of the Party committee of Chongqing Health Committee, reported on the spot that there were no new confirmed cases in Chongqing for 3 consecutive days, no new confirmed cases in 23 districts and counties for 14 consecutive days, and no new confirmed cases in 34 districts and counties for 7 consecutive days. The number of suspected cases to be investigated and close contacts in charge continued to decrease, and the positive situation of the epidemic was expanding.
However, the specialty also reminds that with the resumption of work and the gradual recovery of transportation, the increasing mobility and density of personnel, the risk of imported cases and clustered cases still exists, and the pressure of epidemic rebound cannot be ignored. The key to strengthen epidemic prevention and control cannot be relaxed, and previous efforts and efforts cannot be abandoned. Strictly prevent imported cases and clustered epidemic Important work at present.
The 18th batch of Chongqing medical team supporting Hubei Province went to Xiaogan, Hubei Province on the afternoon of August 28. The medical team consists of 15 doctors with senior professional titles in respiratory department and 15 doctors with senior professional titles in critical department, 30 in total. At present, novel coronavirus pneumonia is being attacked by 18 batches of 1636 players in Hubei, of whom 6 are 812 medical teams in Xiaogan. Chongqing has a total of 812 medical teams.