Detection of severe acute respiratory syndrome coronavirus 2 in nasopharynx according to clinical phenotype of affected patients
duration of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the upper respiratory tract is extremely variable. We investigated this relation in the northeastern Italian province of Udine. 39 483 RT-PCR tests were conducted on 23 778 individuals, and 974 individuals had a positive test result.

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