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Preprint in English | EMBASE | ID: ppcovidwho-326897


The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic in southern Africa has been characterised by three distinct waves. The first was associated with a mix of SARS-CoV-2 lineages, whilst the second and third waves were driven by the Beta and Delta variants respectively1–3. In November 2021, genomic surveillance teams in South Africa and Botswana detected a new SARS-CoV-2 variant associated with a rapid resurgence of infections in Gauteng Province, South Africa. Within three days of the first genome being uploaded, it was designated a variant of concern (Omicron) by the World Health Organization and, within three weeks, had been identified in 87 countries. The Omicron variant is exceptional for carrying over 30 mutations in the spike glycoprotein, predicted to influence antibody neutralization and spike function4. Here, we describe the genomic profile and early transmission dynamics of Omicron, highlighting the rapid spread in regions with high levels of population immunity.

Afr J Thorac Crit Care Med ; 26(2)2020.
Article in English | MEDLINE | ID: covidwho-1304840


The impact of HIV in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has not been well established. It is uncertain if outcomes are better or worse in these patients compared with COVID-19 patients with diabetes mellitus, hypertension and other chronic diseases. The course and outcome is also unknown in HIV-positive patients who are virally suppressed on antiretroviral treatment (ART) compared with those who are treatment-naive. We present two HIV-positive cases with COVID-19 pneumonia - one virally suppressed and the other newly diagnosed. Both patients had favourable outcomes.