When rare becomes common: N2 gene-positive, E gene-negative SARS-CoV-2 PCR results between 2021 and 2022
Description
Nucleocapsid gene-positive, envelope gene-negative (N2+/E-) SARS-CoV-2 PCR results obtained with the Cepheid Xpert Xpress SARS-CoV-2 assay are an infrequent phenomenon. We assessed the validity of the N2+/E- cases with an indirect approach by
