People’s Daily Health Client Reporter Wang Aibing
On March 29, Dajiang Information released news that Hu Moumou, the “zero case” of the Fanchang epidemic, returned from Shanghai on March 23. From the moment he got off the Fanchang Eshan Expressway exit, Austrian The Mikron virus spread silently. Liu Zhirong, director of the Anhui Provincial Center for Disease Control and Prevention, said that the Omicron virus strain has the characteristics of fast transmission, high infectivity, and strong transmission concealment. almost imagined”.
Picture released by Fanchang.
According to a reporter from the People’s Daily Health Client, since the first confirmed case appeared in Fanchang District, Wuhu City, Anhui Province on March 23, 52 new infections have been added so far. According to the report, 37 new infections were clearly related to the first confirmed case Hu Moumou.
“Now most of the confirmed cases and asymptomatic infected people in Wuhu have intersected with “Case Zero” Hu Moumou. Some of them have a short exposure time, such as only a face-to-face, but they are still The virus is infected; some of the two sides wore masks when they met, and it seemed that there was no problem in protection, but it may spread through spitting, nose blowing, etc. “Gong Lei, director of the Emergency Office of the Anhui Provincial Center for Disease Control and Prevention, and chief of the emergency department. It is also said that from the perspective of virus infection, the risk of infection is very high if there is contact with Hu Moumou. The speed and intensity of this dissemination greatly exceeded the existing knowledge of experts. “‘Case Zero’ can be called a super-spreader.”
Jin Dongyan, a professor at the School of Biomedical Sciences at the University of Hong Kong and an expert in virology, said, “One of the characteristics of the spread of the new coronavirus is its inequality. For example, among 100 infected people, about There are 15 people who are highly contagious and infect a large number of people. These so-called super-spreaders have two characteristics. First, they have high viral loads. Generally speaking, these people carry more viruses themselves, and some of them have weaker immune systems. In addition, the transmission power is also related to the current activities of the infected person. High lung capacity, singing, and exercising will all lead to an increase in the transmission power of a person.”
“I have to say that super-spreaders have played a very important role in the spread of the new coronavirus, so it is very important for the prevention and control of the new crown to find super-spreaders, and it is easy to strengthen control Restaurants, karaoke halls, gyms and other places that cause super-spreading. Special attention should be paid to the ventilation conditions of the places. Jin Dongyan reminded that in the future, it is possible to focus on the control of infected persons with high viral loads. It is not difficult to do this, nucleic acid detection can The viral load can be determined. Antigen detection is used to detect positive cases, and the results can better reflect the viral load and infectivity, and can be an important supplement to nucleic acid detection.