RESUMO
OBJECTIVE: Since December 2019, new pneumonia of unknown aetiology broke out in Wuhan, Hubei province, China. Subsequently, a virus, later named as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was identified as the causative agent of the disease. Currently, the epidemic has spread all over the world. The most common manifestations of COVID-19 are fever, fatigue and dry cough. At the moment, the nuclide acid test is the gold standard method for the diagnosis of this infection. METHODS: In the present paper, we report our experience with all patients who came to the Emergency Department from March 1 to April 1, 2020, with suggestive symptoms of COVID-19 infection. Patients: they all underwent a first oropharyngeal and nasopharyngeal swab in the emergency department and, if negative, a second one after at least 24 hours. RESULTS: Our study shows how the results obtained at time zero are usually identical to the ones obtained after 24 hours. We thus suggest, in patients with high suspicion of COVID19 and a negative result at the first swab, to repeat the test after at least 48 hours, during which patients with symptoms of COVID-19 pneumonia disease should be kept in isolation to avoid the risk of contagion. CONCLUSIONS: these measures and in particular the early identifica-tion of cases with consequent isolation will allow the containment of the spread of the virus, representing one of the fundamental measures to guarantee and strengthen the control of the infection to reduce hospital admissions, the overload of national health service and health costs.