Abstract Objective To describe the usability of the Integrated Management of Childhood Illness (IMCI) application among Primary Health Care (PHC) professionals, measured by the System Usability Scale (SUS). Methods This descriptive study with a quantitative approach was conducted in Arapiraca (AL, Brazil) in June 2023. Twenty-two professionals (nurses and physicians) certified in IMCI and working in PHC participated in this study. The educational intervention was conducted in person, organized into two groups, with theoretical presentations and simulations of fictitious clinical […]