RT-PCR detection of SARS-CoV-2 mRNA on nasopharyngeal swab is the standard for diagnosing active Covid-19 disease in asymptomatic subjects and in symptomatic patients without the typical radiological findings. Nasopharyngeal swabbing appears a trivial procedure, still an inappropriate nasopharyngeal sampling, performed by untrained operators, can be a relevant cause of false negative findings with a clear negative impact on the effort to control the epidemic and, when PPE is not properly used, this can expose healthcare workers and patients to risks of contagion.
Nasopharyngeal swab collection in the suspicion of Covid-19 / Piras, A.; Rizzo, D.; Longoni, E.; Turra, N.; Urru, S.; Saba, P. P.; Musumano, L.; Bussu, F.. - In: AMERICAN JOURNAL OF OTOLARYNGOLOGY. - ISSN 0196-0709. - (2020), p. 102551. [10.1016/j.amjoto.2020.102551]