More than 23000 new contacts are added every day? The biggest challenge for epidemic prevention and control

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 More than 23000 new contacts are added every day? The biggest challenge for epidemic prevention and control


With the improvement of the efficiency of detection methods, the number of new-type coronavirus pneumonia diagnosed is also increasing, which also brings a sharp rise in the number of close contacts in Hubei Province and the whole country. On the other hand, with the strengthening of the management and screening of local and migrant population by local governments, more close contacts are traced back, which effectively improves the prevention and control efficiency of the epidemic and prevents the further spread of the epidemic.

Close contacts are difficult to track

According to the statistics of the number of close contacts tracked by academician Zhong Nanshan since he announced that the new coronavirus would be transmitted to people after investigation in Wuhan on January 20, the first financial reporter found that compared with the new suspected cases, the number of close contacts increased faster. As of February 2, the number of close contacts tracked in China had reached 163844, 5 since January 28 Within days, the number of new close contacts per day exceeded 23000. As of February 2, the total number of suspected cases in China is less than 20000. With the tracing of close contacts, the number of suspected cases is likely to increase significantly.

According to the data of Hubei Province, as of February 2, the total number of close contacts tracked in Hubei Province has reached 48571. In the last five days, the number of new close contacts in Hubei Province is about 6000.

In addition to close contacts, the number of people undergoing medical observation cannot be ignored. As of February 2, the number of people receiving medical observation in China has reached 137594, and the number of new medical observation in recent 5 days has exceeded 20000, which is significantly more than the number of people who have cancelled medical observation. In addition, as of February 2, the number of people under medical observation in Hubei Province is 43121. Whats more, since January 27, the health and Health Commission of Hubei Province has not announced the number of people who have been removed from medical observation, that is to say, the number of people under medical observation every day is increasing.

According to the number of close contacts and the number of people under medical observation, the current situation of epidemic prevention and control is still very serious. Especially for close contacts, tracking is the biggest challenge in epidemic prevention and control. And this part of close contacts will affect the development trend of the future epidemic.

In addition, the phenomenon of family type cluster infection is particularly prominent in this epidemic. A paper published online on January 24 in the lancet, an authoritative medical journal, studies pneumonia infection in a family of seven. The results show that new coronavirus infection has been found in five family members who have recently been to Wuhan, and the same virus has been found in another family member who has not been with them. Only one child who often wears a mask is uninfected, and another does not show clinical symptoms. The study is the first to reveal the risk of asymptomatic infection, suggesting that carriers may be able to spread disease in the community without knowing their status.

In the first case of human to human transmission of the new coronavirus in the United States, an American woman returned to Chicago from Wuhan. Less than a week after being diagnosed with the infection, her husband was also diagnosed with the infection, suggesting that the incubation period of infection is also very high.

But tracking close contacts is challenging. Tracking close contacts is very important, which can effectively improve the efficiency of prevention and control of the epidemic, but it is also difficult. Antoine flahault, director of the Institute of global public health at the University of Geneva, told CFI, its easier for us to track close contacts who have been suspected of infection, or those who show clinical symptoms. But there are also close contacts who may be in contact with people who do not know they are infected with the virus. How do these people track them?

The most effective way at present is to arrange special personnel to check

On January 27, he Qinghua, a first-class inspector of the disease control bureau of the national health and Health Commission, said at a press conference: the management of close contacts should be strengthened. As more and more confirmed cases and suspected cases are diagnosed, their number of close contacts is also increasing dramatically, and their tracking management pressure is increasing.

He Qinghua pointed out that the management of close contacts is focused on the community, and medical and health institutions at all levels will strengthen cooperation with the community, standardize the case epidemiological investigation, scientifically determine close contacts, and actively guide the community to do a good job in the detection, prevention, control and emergency treatment of pneumonia epidemic situation of new coronavirus infection, effectively implement the screening of close contacts and other measures, so as to achieve seamless Docking.

At a who press conference on January 30, who director general Tan Desai also said that who had sent experts to the outbreak center in Hubei Province, and would take more measures to give suggestions on ways to trace close contacts.

To isolate the source of infection, cut off the route of transmission, and protect vulnerable people, these are the three things the government is focusing on now. Those who have close contact with the confirmed cases should be isolated for two weeks, and they will be better if they dont get sick, and they will get medical treatment in time when they get sick, an expert who is engaged in immune research in a top three hospital in Shanghai told the first financial reporter

However, experts said that the tracking of close contacts can only rely on the strength of the community, the implementation of close contacts home-based medical observation measures, daily follow-up of close contacts health status, and timely start the screening, diagnosis, isolation treatment and other procedures once the situation is found, and do a good job in the isolation control of patients and transfer to designated hospitals and other preparatory work.

(function() {(window. Slotbydup = window. Slotbydup| []). Push ({ID: u5811557, container: ssp_, async: true});)); this is a very complex work, but there is no other way at present, only to arrange special personnel to ask those who have contact with the confirmed patients and potential infected people. Adam Kamradt Scott, a professor of global public health and safety at the University of Sydney, Australia, told CFI, this requires interaction and questions, and the trust of these close contacts, so that they can relax. Only the old way of probing and testing between people is effective. Professor Kamradt Scott said that at present, new technologies such as artificial intelligence and robots can not replace the access of special personnel to close contacts, and even if face recognition technology is widely used, it can not achieve the purpose of tracing the source of close contacts. Source: First Financial Editor: Li Chao nb12814

Its a very complicated job, but there is no other way at present, only to arrange someone to ask those who have contact with the confirmed patients and potential infected people. Adam Kamradt Scott, a professor of global public health and safety at the University of Sydney, Australia, told CFI, this requires interaction and questions, and the trust of these close contacts, so that they can relax. Only the old way of probing and testing between people is effective.

Professor Kamradt Scott said that at present, new technologies such as artificial intelligence and robots can not replace the access of special personnel to close contacts, and even if face recognition technology is widely used, it can not achieve the purpose of tracing the source of close contacts.