Introduction: Pulmonary tuberculosis is a contagious disease that requires a long treatment period, making family support crucial in the healing process. Objective: This study aims to explain the role of the family in preventing the transmission of pulmonary tuberculosis within the family at Kawangu Health Center, Kambatatana Village. Methods: This research used a descriptive design with total sampling as the sampling technique. The instrument used in this study was a questionnaire. Results: The study findings revealed that the role of the family in medication assistance was reported by 18 participants (78%), the role of the family in using personal protective equipment (PPE) was reported by 14 participants (61%), the role of the family in maintaining environmental cleanliness was reported by 22 participants (96%), and the role of the family in meeting nutritional needs was reported by 17 participants (74%).
                        
                        
                        
                        
                            
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