1 Lung Infection and Immunity Unit, Department of Medicine, University of Cape Town, Cape Town, South Africa. Electronic address: [email protected].
2 Lung Infection and Immunity Unit, Department of Medicine, University of Cape Town, Cape Town, South Africa; Institute of Infectious Diseases and Molecular Medicine, Cape Town, South Africa.
3 South African Centre for Epidemiological Modelling and Analysis, Stellenbosch University, Stellenbosch, South Africa.