To sum up, in fact, this virus is much higher than the infection rate of SARS in that year, and it is very easy to be infected, so people may be infected with a little carelessness. According to the paper "Initial Transmission Dynamics of Pneumonia Infected by novel coronavirus in Wuhan, China" published by China CDC, Hubei CDC and Hong Kong University on October 29th, 65438, and through the data analysis of the first batch of 425 confirmed cases in Wuhan, it is estimated that R0 (basic infection number) is about 2.2, that is, each infected person will transmit it to another 2.2 people on average. This is close to the WHO's preliminary estimate, and the R0 value given by the agency is 1.4 to 2.5.
Symptoms are mild but contagious, which is the biggest difference between COVID-19 and SARS, and also the difficulty of epidemic prevention and control. According to a microbiologist who asked not to be named, SARS is highly contagious only after symptoms such as fever and pneumonia appear. The incubation period of novel coronavirus is about 12 days or even longer, and the onset is not urgent, and it is not necessary to have high fever and obvious respiratory symptoms. Some patients just have a little fatigue and headache, accompanied by digestive tract symptoms. ? These patients are hidden in the crowd and are not easy to be found, nor will they undergo medical tests, and even doctors are not easy to distinguish. ? Tong, vice president of Beijing Chaoyang Hospital and an expert in respiratory critical illness, told China Newsweek. This is a difficult problem to solve. Only through continuous publicity and education can they realize their own danger, protect themselves and their families, and be responsible for society. ?
During the epidemic, it is everyone's responsibility and obligation to stay at home with peace of mind, isolate independently and not add chaos to society and the country. Come on Wuhan, come on China.