The SARS-CoV-2isanenvelopedβ-coronavirus,circularorelllipticalparticlediameterofabout60~140nm,ftenpleomorphic,obviouslydifferentfromSARS-CoVandMERS-CoVingeneticcharacteristics.Themainclinical manifestations includefever,fatigueand , thiab lwm yam., uas tuaj yeem tsim kho sai sai, ua pa tsis ua haujlwm, ua pa tsis ua haujlwm, mob ua pa nyuaj, mob septicshock, ntau lub cev tsis ua haujlwm, severeacid-basemetabolism disorder, thiab ua rau muaj kev phom sij rau lub neej. .SARS-CoV-2 hassbeenidified asthemainmeansoftransmissionthroughrespiratorydroplets(sneezing,coughing,etc.)andcontact(pickingnostrilwiththehandincontactwiththevirus,rubbingeyes,etc.).SARS-CoV-2issensitivetoultravioletrayandheatd0minuteslubthys6. Lether, 75% ethanol, chlorinedisinfectant, peraceticacidandchloroform.