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TrialConditionsStatusPhaseUpdatedMore infoNCT ID
Effect of Surgical Masks in Preventing Acute Respiratory InfectionsCOVID-19, Coronaviridae Infections, Infections, Nidovirales infectious disease, Orthocoronavirinae infectious disease, RNA Virus Infections, influenza, lung disorder, pneumonia, respiratory system disorder, respiratory tract infectious disorder, viral infectious disease, viral pneumoniaEnrolling by invitationNot applicable2026-09-23NCT07739446