Could asymptomatic carriers spread the SARS-CoV-2 infection? Experience from the Italian second wave.

Could asymptomatic carriers spread the SARS-CoV-2 infection? We read with great interest the recent paper by Shiyi Cao et al. [[1]] entitled "Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China" regarding the mass screening program of SARS-CoV-2 infection conducted in the metropolitan city of Wuhan, China. We used the Allplex™ SARS-CoV-2 multiplex real-time PCR assay (Seegene Inc.) to detect 4 target genes: RdRP, S and N genes specific for SARS-CoV-2, and E gene expressed in all Sarbecovirus' including SARS-CoV-2. [Extracted from the article]