High Asymptomatic Carriage With the Omicron Variant in South Africa

on behalf of the Ubuntu Study Team

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


We report a 23% asymptomatic severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) Omicron carriage rate in participants being enrolled into a clinical trial in South Africa, 15-fold higher than in trials before Omicron. We also found lower CD4+T-cell counts in persons with human immunodeficiency virus (HIV) strongly correlated with increased odds of being SARS-CoV-2 polymerase chain reaction (PCR) positive.

Original languageEnglish
Pages (from-to)E289-E292
JournalClinical Infectious Diseases
Issue number1
Publication statusPublished - 1 Jul 2022


  • Omicron variant
  • PWH
  • SARS-CoV-2
  • South Africa
  • asymptomatic carriage


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