Rheumatic FeverRheumatic Heart DiseaseRheumatic DiseasesAspirinChoreaStreptococcus pyogenesAntistreptolysinPharyngitisStreptococcal InfectionsFeverPenicillin G BenzathineGrenadaRheumatic NoduleNorthern TerritoryAcute DiseaseHeart Valve DiseasesMyocarditisPyodermaStreptococcal VaccinesMitral Valve StenosisQ FeverScarlet FeverOceanic Ancestry GroupMitral Valve InsufficiencyArthritis, ReactiveStreptococcusAortic Valve InsufficiencyAntigens, BacterialMitral ValveArthritisHeart MurmursNew CaledoniaAdams-Stokes SyndromePenicillinsInternational Council of NursesYellow FeverGlomerulonephritisTyphoid FeverArthritis, RheumatoidBacterial Outer Membrane ProteinsHeart ValvesAnti-Inflammatory Agents, Non-SteroidalAntibodies, BacterialPlatelet Aggregation InhibitorsRecurrence