Wuhan Evening News, February 10 (Reporter Liu Ruiche, Correspondent Feng Xia) The incubation period of new coronary pneumonia is up to 24 days, and less than half of the population with early fever symptoms. On the 10th, the new paper led by Academician Zhong Nanshan attracted great attention. The reporter learned from experts and clinicians in the field of virology in Jiangcheng and that the characteristics of the new coronavirus have not changed fundamentally compared with the previous mastery. Please do not worry too much.
According to Academician Zhong Nanshan's paper, the median incubation period of new coronary pneumonia is 3.0 days, with a maximum of 24 days. Professor Li Yan from Tongji Medical School of Huazhong University of Science and Technology has been engaged in the coronavirus research for a long time. He introduced that the value in the middle position is the median, which shows that half of the infected cases collected in the paper have an incubation period of no more than 3 days, but it does not mean that the average incubation period is 3 days.
At the same time, according to the latest media reports, Guan Weijie, a member of the paper team, said that the longest incubation period is still an isolated case.
Li Yan said that according to the experience of SARS prevention and control that year, the median incubation period of SARS coronavirus is about 3 to 4 days, but there are also patients with 18-day incubation period, but the most patients are on the disease 2 to 3 days after being exposed to the source of infection, so there is no need to panic because of the "24 days". "What we need to do is to actively cooperate, respond to relevant policies and regulations, and take good protection." The paper
introduced that only 43.8% of people showed symptoms of fever, so it was concluded that when testing cases of new coronavirus infection, we should not focus too much on whether there is a fever.
Wu Wenjuan, director of the Department of Critical Care Medicine and deputy head of the Provincial Medical Treatment Expert Group of Jinyintan Hospital, introduced that the early symptoms of the new coronary pneumonia are indeed very different. Some people show fever, some show gastrointestinal symptoms, and some have no obvious symptoms.
She also said that the paper also pointed out that from the perspective of clinical manifestations, fever accounts for 87.9%, and cough accounts for 67.7%, so fever is still the most important symptom.
The paper also mentioned that in terms of testing, 840 patients received CT test when they were admitted to the hospital, of which only 76.4% of the patients showed pneumonia , which means that the accuracy rate of CT was 76.4%. This reflects that it is still not enough to use CT as a single detection method.
Wu Wenjuan said that the diagnosis and identification are strictly followed by the latest version of the "Diagnosis and Treatment Plan for Pneumonia Infected by the New Coronavirus Infection". Hubei Province has added the classification of "clinical diagnosis" and the "suspected cases" standards are revised, which is equivalent to the relaxation of the standards for suspected cases. Patients with pneumonia imaging characteristics in suspected cases are patients with symptoms of CT, and the case is clinically diagnosed. The diagnostic criteria for confirmed cases have not changed.
Wu Wenjuan introduced that the understanding of the new coronavirus is still limited at this stage. With the deepening of understanding and research, it is not ruled out that the subsequent prevention and control policies may be adjusted.
[Editor: Liu Ming Wang Shuang Cai Wanting]
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