Cov khoom siv no yog tsim los rau hauv vitro qualitative detection of novel coronavirus (SARS-CoV-2) in nasopharyngeal and oropharyngeal swab samples.RNA los ntawm SARS-CoV-2 feem ntau pom tau nyob rau hauv cov kab mob ua pa thaum lub sij hawm mob hnyav los yog cov neeg asymptomatic.Nws tuaj yeem siv ntxiv kev tshawb pom zoo thiab sib txawv ntawm Alpha, Beta, Gamma, Delta thiab Omicron.