Figure 2.
Cumulative incidence of a first severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron infection from 1 January until 31 October 2022 among included AGEhIV coronavirus disease 2019 substudy participants. Cumulative incidences of a first Omicron infection were compared between people with human immunodeficiency virus (HIV) and controls (A) and between participants with and those without a prior non-Omicron infection (B). Follow-up started on 1 January 2022 and continued until the date of the last SARS-CoV-2 nucleocapsid antibody measurement. The numbers of participants at risk and with incident infection (and the cumulative number of infections) at the end of each time interval are shown. The 7 second Omicron infections (Omicron reinfections) are not displayed in these plots. P values are based on log-rank test.