Swab
Hence, the sensitivity of SARS-CoV-2 RNA detection by multiplex true-time PCR from nasal secretions was 89.two% (95% self-assurance interval [95% CI], 75.3 to 95.7), and its specificity was 100.% (95% CI, 94.six to one hundred.). The κ index was .72, indicating substantial concordance amongst nasal and nasopharyngeal swabbing to detect SARS-CoV-2 according to Landlis and Koch rank. The Youden J index was calculated at 89.2%, demonstrating fantastic efficiency to detect SARS-CoV-2 RNA. This study has some limitations, like the lack of constant video angle and high quality. The types of videos ranged from professionally created instructional videos to “selfies” posted...