Ezubere ngwa a ka ọ bụrụ nchọpụta qualitative in vitro nke novel coronavirus (SARS-CoV-2) n'ụdị imi nasopharyngeal na oropharyngeal swab.A na-achọpụta RNA sitere na SARS-CoV-2 n'ụdị iku ume n'oge nnukwu ọrịa ma ọ bụ ndị asymptomatic.Enwere ike iji ya n'ihu nchọpụta qualitative na ọdịiche nke Alfa, Beta, Gamma, Delta na Omicron.