WHO: novel coronavirus pneumonia has not yet erupted in a global pandemic

Novel coronavirus pneumonia continued to spread in February 24th, but WHO has not yet constituted a "pandemic disease", the WHO said at a press conference in Geneva Tedros adhanom ghebreyesus, director general of who, stressed: "the use of the word pandemic now is not only against the facts, but also may cause panic "At present, novel coronavirus is not flooding the world, nor has it caused serious serious illness or death," he said Although the virus has the potential for a pandemic, according to our assessment, it has not yet reached such a level "China's WHO novel coronavirus pneumonia joint expert group held a news conference in Beijing on the evening of February 24th Novel coronavirus pneumonia, China leader of the joint research group, and Liang Wan Nian, head of the new China's national health and Health Committee, said the 104 new strains of the new crown virus isolated from different locations were sequenced by genome sequencing, and the homology reached 99.9% The epidemiological characteristics of novel coronavirus pneumonia were 1 demographic characteristics: the average age of patients was 51 years, 30~69 years old accounted for 77.8%, and 77.5% of cases were from Hubei 2 Animal host: bat may be the host of new coronavirus, and pangolin may be one of the intermediate hosts of new coronavirus 3 transmission: novel coronavirus is detected from feces of some confirmed patients, and there is a risk of fecal oral transmission The new coronavirus may be transmitted through aerosols, but this is not the main mode of transmission in China 4 Family clustering: according to the field investigation in Guangdong and Sichuan, 78% - 85% of the cases occurred in families 5 Management of close contacts: in Guangdong and Sichuan, almost all the close contacts have been tracked and observed by field epidemiologists About 1% - 5% of the close contacts have been diagnosed as positive in the laboratory 6 susceptibility: the novel coronavirus is a new pathogen Therefore, people of all ages are immune to new coronavirus and are generally susceptible to infection Transmission dynamics of new coronavirus pneumonia 1 Transmission in Wuhan Most of the early cases in Wuhan are related to the exposure of the seafood market in South China Subsequently, the virus spreads to the community through the people who contact the seafood market, forming a community transmission 2 Communication in other areas except Wuhan In Xiaogan, Huanggang, Jingzhou and Ezhou, which are close to Wuhan, the epidemic intensity is slightly lower than that in Wuhan In other areas of the province, due to traffic control and reduced population flow in Wuhan, its communication power is closer to that in other areas of the country 3 Communication in other areas except Hubei Province Up to now, the vast majority of reported cases are related to Wuhan, Hubei Province, and the community transmission in other provinces is very limited, most of them are family clustering 4 Spread of special places and people We have noticed that there are clustered outbreaks in medical institutions, prisons and other special places But generally speaking, it is not the main factor that affects the transmission dynamics Novel coronavirus pneumonia cases (2055 confirmed cases, 1070 clinical diagnosis cases and 157 suspected cases) were reported in 476 medical institutions and 3387 medical staff in China 90% medical personnel (3062 cases) were from Hubei.