TheSARS-CoV-2isanenvelopedβ-coronavirus,circularorellipticalparticlediameter of about 60~140nm, saepepleomorphicus, manifesto differens a SARS-CoVandMERS-CoVingeneticcharacteres. toseverepneumonia,respiratorialis defectus, acuterespiratory distresssyndrome, septicshock, multi-organicum, severeacidum-basemetabolismdisordinatio, et vita minax .SARS-CoV-2eenidentifiedasthemain medium transmissionthroughrespiratoriorum (sternuum, tussis, etc.) et contactum (legendo nostril cum manu incontactum cum viro, frictiones, etc.). chlorinedisinfectant, peraceticacidadchloroformia.