MediumIndigenous HealthRheumatic heart disease in Aboriginal childau-amcau-racgp
A 4-year-old Aboriginal boy living in a remote community has had recurrent sore throats and is found to have a new pansystolic murmur at the apex radiating to the axilla. Echocardiography shows moderate mitral regurgitation consistent with rheumatic heart disease. According to Australian guidelines, which preventive strategy is most important to reduce progression?