Associations between salivary and nasopharyngeal microbiomes of SARS-CoV-2-positive patients and COVID-19 symptoms and age. (A) Alpha diversity, represented by richness, in saliva (red) and ...

Collecting specimens from the surface of the respiratory mucosa with nasopharyngeal swabs is a procedure used to diagnose Covid-19 as well as other respiratory viral infections and certain bacteria ...

Because the results of testing of nasopharyngeal swab specimens to detect SARS-CoV-2 may vary with repeated sampling in individual patients, 5 we evaluated viral detection in matched samples over ...