1 Division of Medical Virology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
2 Department of Medicine, Stellenbosch University and Tygerberg Academic Hospital, Cape Town, South Africa.
3 KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine & Medical Sciences, University of KwaZulu-Natal, Durban, South Africa.
4 Centre for Epidemic Response and Innovation (CERI), School of Data Science and Computational Thinking, Stellenbosch University, Stellenbosch, South Africa.
5 Discipline of Virology, School of Laboratory Medicine and Medical Sciences and National Health Laboratory Service (NHLS), University of KwaZulu-Natal, Durban, South Africa.
6 National Health Laboratory Service, Tygerberg Business Unit, Cape Town, South Africa.
7 Department of Global Health, University of Washington, Seattle, Washington, USA.