Elisa Meiti Ribeiro Lin Plec,Rebeca Carolina Campos e Almeida Silva,Marcos Correia Lima,Laura Rodrigues Sefair,Eduardo Machado Rossi Monteiro, Nasal Cerebrospinal Fluid Fistula after a Nasal Swab Test for COVID-19 in a Patient without Previous Nasosinusal Disease Surgical Case Reports 2021 2613-5965 http://dx.doi.org/10.31487/j.SCR.2021.08.06 https://www.sciencerepository.org/nasal-cerebrospinal-fluid_SCR-2021-8-106 Abstract: COVID-19 is a highly contagious disease caused by the coronavirus SARS-CoV-2. In order to diagnose its infection, a sample is collected by rotating a nasal swab in the nasopharynx. Due to the COVID-19 outbreak, this test was widely used, but its risks were not widely disclosed. This study describes the first case in the literature regarding nasal cerebrospinal fluid (CSF) fistula after a nasal swab test for COVID-19 in a patient without previous nasosinusal disease. This report warns of the risk of a serious complication secondary to the nasal swab test for the diagnosis of COVID-19.Keywords: COVID-19, nasal cerebrospinal fluid fistula nasopharyngeal swabs, coronavirus