Strengthening Health System Capacity Through Volunteer-Driven Twinning Partnerships and Initiatives Since 1992 The American International Health Alliance (AIHA) is an international nonprofit organization working to advance global health through needs-driven, locally-owned, and locally-sustainable health systems strengthening (HSS) and human resources for health (HRH) interventions. AIHA'S vision is a world with access to quality healthcare for everyone, everywhere. AIHA's mission is to strengthen health systems and workforce capacity through locally driven partnerships with sustainable solutions.