Sensitivity of SARS-CoV-2 Detection With Nasopharyngeal Swabs
SARS-CoV-2-infected subjects have been proven contagious in the symptomatic, pre-symptomatic, and asymptomatic phases. The identification of these patients is crucial in order to prevent virus circulation. No reliable data on the sensitivity of nasopharyngeal swabs (NPS) are available. Three hundred and ninety-three NPS were evaluated in 233 patients; the sensitivity was 77% (95% CI, 73 to 81%)
