传染病机理与通风策略-钱华【可外发】.pdf

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1、呼吸道传染病传播新认识下的通风控制策略呼吸道传染病传播新认识下的通风控制策略钱华钱华东南大学能源与环境学院教授、博士生导师国际室内空气品质学会科学院 Fellow呼吸道传染病传播新认识下的通风控制策略呼吸道传染病传播新认识下的通风控制策略东南大学东南大学 能源与环境学院能源与环境学院 钱华钱华 Southeast Universityof 563 3Modified from Atkinson and Wein,Bulletin of Mathematical Biology,2008,70:820-867TouchingSoutheast University呼出飞沫呼出飞沫4Ji,H Qi

2、an,J Ye,X Zheng（2018）.Journal of aerosol science 115,164-172Southeast UniversityLiu L.et al(2017).Indoor air,27:452-462.1.5 m钱华等，科学通报（2017）风险和距离关系风险和距离关系Southeast University新冠诊疗方案（第九版）世卫组织错误认知：新冠病毒世卫组织错误认知：新冠病毒不是不是空气传播空气传播Southeast Universityhttps:/who.africa- Current evidence suggests that the viru

3、s spreads mainly between people who are in close contact with each other,typically within 1 metre(short-range).A person can be infected when aerosols or droplets containing the virus are inhaled or come directly into contact with the eyes,nose,or mouth.The virus can also spread in poorly ventilated

4、and/or crowded indoor settings,where people tend to spend longer periods of time.This is because aerosols remain suspended in the air or travel farther than 1 metre(long-range).Coronavirus disease(COVID-19):How is it transmitted?updated 30 April,2021 Southeast University20202020年年3 3月月WHOWHO发文否定新冠病毒

5、空气传播发文否定新冠病毒空气传播20222022年年4 4月月WHOWHO研判认为病毒空气传播研判认为病毒空气传播新冠病毒新冠病毒不是不是空气传播空气传播为何为何WHOWHO需历经需历经两年两年研判新冠病毒研判新冠病毒可经空气传播？可经空气传播？面挑战面挑战Southeast UniversityCollect data from 320 cities outside of Hubei,China,between Jan 4/2020-11/Feb/20207324/10980 were collected Only 1 transmission with between 2 cases we

6、re happened in outdoor environmentOnly 3 or 3+cases involved were included318 outbreak involving 1245 cases in 120 cities室内新冠传播规律室内新冠传播规律Qian,Miao.Li*et al.Indoor transmission of SARS-CoV-2 Indoor Air(2021)Southeast University室内新冠传播规律室内新冠传播规律Qian,Miao.Li*et al.Indoor transmission of SARS-CoV-2 Indoo