1 Disease Elimination Program, Life Sciences Discipline, Burnet Institute, Melbourne, Victoria, Australia. lindi.masson@burnet.edu.au.
2 Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa. lindi.masson@burnet.edu.au.
3 Centre for the AIDS Programme of Research in South Africa, Durban, South Africa. lindi.masson@burnet.edu.au.
4 Central Clinical School, Monash University, Melbourne, Victoria, Australia. lindi.masson@burnet.edu.au.
5 Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa.