Here is what the South African National Centre for Communicable Diseases has to say:
The Network for Genomics Surveillance in South Africa (NGS-SA, www.ngs-sa.org), which includes the National Institute for Communicable Diseases (NICD), KRISP at the University of KwaZulu-Natal (UKZN), University of Cape Town (UCT), Stellenbosch University (SUN), the University of the Free State (UFS), the University of Pretoria, the University of the Witwatersrand (WITS) and the National Health Laboratory Service (NHLS), has been monitoring changes in SARS-CoV-2, the virus which causes COVID-19, since March 2020.
What is the B.1.1.529 lineage?