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I n their Letter to the Editor, "Care and principles in chest drainage models during the pandemic by Covid-19", the authors discuss the topic of chest drainage in patients suspected or diagnosed with Covid-19. Indications of the procedure in patients with the disease are pneumothorax in about 1% and pleural effusion in 5% 1,2 . Carvalho Answer to the editor's letter 2 Rev Col Bras Cir 47:e20202765 changed our protocol. Today, we try to change the filter every 72 hours, evaluating the connectiondoi:10.1590/0100-6991e-20202765 pmid:33406217 fatcat:zr6yfbap7vdlvpylyfl6hpuezy