Sensitivity and negative predictive value of mid-turbinate swabs and nasopharyngeal swabs compared to combined results for the diagnosis of viral infection in adults with acute respiratory illness.

Foot note: CI: confidence interval, hCoV: human coronavirus, MT: mid-turbinate, NP: nasopharyngeal, RSV: respiratory syncytial virus.1Not adjusted for dependence between observations (some swab pairings were from same subjects but collected at subsequent illness episodes).