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Volume 29, Number 11—November 2023
Research

SARS-CoV-2 Reinfection Risk in Persons with HIV, Chicago, Illinois, USA, 2020–2022

Richard A. TeranComments to Author , Alexandra Gagner, Stephanie Gretsch, Jeff Lauritsen, Daniel Galanto, Kelly Walblay, Peter Ruestow, Colin Korban, Massimo Pacilli, David Kern, Stephanie R. Black, and Irina Tabidze
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (R.A. Teran); Chicago Department of Public Health, Chicago, Illinois, USA (R.A. Teran, A. Gagner, S. Gretsch, J. Lauritsen, D. Galanto, K. Walblay, P. Ruestow, C. Korban, M. Pacilli, D. Kern, S.R. Black, I. Tabidze)

Main Article

Table 1

SARS-CoV-2 reinfection incidence rates, by HIV status, Chicago, Illinois, USA, January 1, 2020–May 31, 2022*

Characteristic No. (%) events Incidence, % (95% CI)
 Incidence rate difference, %
Analytic cohort PWH PWOH
Total observation period
 23,834 (100)
 50 (37–66)
 66 (57–77)
 50 (49–51)
 16
Timing of reinfection, by variant phase
Ancestral variant, 2020 Jan 1–Dec 31 866 (3.6) 16 (9–26) 30 (16–59) 16 (15–17) 14
Alpha and other pre-Delta variants, 2021 Jan 1–Jul 10 1,030 (4.3) 6 (2–13) 8 (4–16) 6 (5–6) 2
Delta variant, 2021 Jul 11–Dec 18 3,039 (12.8) 11 (5–19) 17 (12–25) 11 (10–11) 6
Omicron variant, 2021 Dec 19–2022 Mar 1
 18,899 (79.3)
 40 (29–55)
 50 (42–60)
 40 (39–41)
 10
Timing of reinfection, by calendar quarter
2020
Apr–Jun 14 (0.1) 2 (0–7) 16 (1–209) 2 (1–3) 14
Jul–Sep 268 (1.1) 12 (6–21) 30 (11–82) 12 (10–13) 18
Oct–Dec 584 (2.5) 11 (5–20) 14 (5–37) 11 (10–12) 3
2021
Jan–Mar 549 (2.3) 5 (2–12) 5 (1–16) 5 (4–6) 0
Apr–Jun 457 (1.9) 3 (1–8) 4 (1–12) 3 (2–3) 1
Jul–Sep 721 (3.0) 3 (1–9) 9 (5–17) 3 (2–-3) 6
Oct–Dec 9,477 (39.8) 32 (22–45) 42 (33–53) 32 (31–32) 10
2022
Jan–Mar 7,750 (32.5) 20 (12–31) 27 (21–35) 20 (19–20) 7
Apr–May 4,014 (16.8) 9 (4–17) 9 (5–13) 9 (8–9) 0

*Incidence is given as percentage of cases per 1,000 person-years. PWH, persons with HIV; PWOH, persons without HIV.

Main Article

Page created: September 06, 2023
Page updated: October 23, 2023
Page reviewed: October 23, 2023
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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