OP-ED 26 July 2021 Leave No One Behind: We must urgently address vaccination of undocumented migrants and asylum seekers By Jo Vearey, Sally Gandar, Rebecca Walker, Thea de Gruchy, Fatima Hassan, Tlaleng Mofokeng, Pinky Mahlangu, Nicholas Maple, Francois Venter and Sharon Ekambaram 2 min 0