No detection of SARS-CoV-2 RNA on urethral swab in patients with positive naso-pharyngeal swab
Abstract Background The recent SARS-CoV-2 infection is the cause of one of the most important pandemics that history has ever experienced. SARS-CoV-2 can lead to a MOF (Multiple Organ Failure) that is critical for life of patients. Viral RNA is found in human tissues as lung, intestine, testicle, kidney, etc. and it is the reason to theorize different ways of transmission of the virus in addition to respiratory droplets. The aim of our study was to evaluate the presence of SARS-CoV-2 in urethral swabs. Methods We enrolled 10 patients with SARS-CoV-2 infection who attended the Infectious Diseases Unit of the A.O.U. Federico II of Naples, from March 2020 to April 2020. For each patient, one urethral swab was collected at the time of SARS-CoV-2 infection. Results All ten patients had a negative urethral swab for SARS-CoV-2 RNA when the rhino-oropharyngeal swab was found to be positive for SARS-CoV-2 RNA. Our data show for the first time that the virus would not affect the urinary tract and therefore would not be found in the urine and even less would it be transmissible through the urine. This result was independent of the stage of the disease, in fact, regardless of the severity of the clinical conditions, all patients had a negative urethral swab for SARS-CoV-2 RNA. Conclusion This observation, which needs to be further investigated with further studies and a larger sample, could be the cornerstone for understanding the role of SARS-CoV-2 in relation to the genitourinary system.