inclusion criteria: - outpatients older than 18 years and younger than 80 years. - patients with a medical indication for a diagnostic test for active infection to sars-cov-2 - patients who present mild symptoms typical of covid-19 and who have less than three days of evolution - patients who have cognitive and motor skills to perform mouthwash correctly. - patients who understand and speak spanish - patients who freely give their consent to participate in the study, after a correct understanding of its objectives and procedures.

inclusion criteria: - outpatients older than 18 years and younger than 80 years. - patients with a medical indication for a diagnostic test for active infection to sars-cov-2 - patients who present mild symptoms typical of covid-19 and who have less than three days of evolution - patients who have cognitive and motor skills to perform mouthwash correctly. - patients who understand and speak spanish - patients who freely give their consent to participate in the study, after a correct understanding of its objectives and procedures.