Coronary pneumonia in office and public places Prevention and control technology solutionsI. Preparation before work(1) Guaranteeing the provision of protective material
新型冠状肺炎的疫情已在全球蔓延,而南美洲的巴西也在2020年2月26日出现首例确诊病例。当地科学家与英国科学家合作,紧急针对该名61岁的巴西患者进行“冠状病毒基因定序”,结果发现这名患者体内的新冠病毒同武汉公布的病毒基因相比存在3处不同,表示病毒在传播过程中已经发生突变。这份题名为《First report of COVID-19 in
1. Aerosol transmission: droplets are mixed in the air to form an aerosol, which causes infection after inhalation.How long the aerosol can be suspended in the air, I ha