Vaccines (Apr 2024)

Correlates of Breakthrough SARS-CoV-2 Infections in People with HIV: Results from the CIHR CTN 328 Study

  • Cecilia T. Costiniuk,
  • Terry Lee,
  • Joel Singer,
  • Yannick Galipeau,
  • Corey Arnold,
  • Marc-André Langlois,
  • Judy Needham,
  • Mohammad-Ali Jenabian,
  • Ann N. Burchell,
  • Hasina Samji,
  • Catharine Chambers,
  • Sharon Walmsley,
  • Mario Ostrowski,
  • Colin Kovacs,
  • Darrell H. S. Tan,
  • Marianne Harris,
  • Mark Hull,
  • Zabrina L. Brumme,
  • Hope R. Lapointe,
  • Mark A. Brockman,
  • Shari Margolese,
  • Enrico Mandarino,
  • Suzanne Samarani,
  • Bertrand Lebouché,
  • Jonathan B. Angel,
  • Jean-Pierre Routy,
  • Curtis L. Cooper,
  • Aslam H. Anis

DOI
https://doi.org/10.3390/vaccines12050447
Journal volume & issue
Vol. 12, no. 5
p. 447

Abstract

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COVID-19 breakthrough infection (BTI) can occur despite vaccination. Using a multi-centre, prospective, observational Canadian cohort of people with HIV (PWH) receiving ≥2 COVID-19 vaccines, we compared the SARS-CoV-2 spike (S) and receptor-binding domain (RBD)-specific IgG levels 3 and 6 months post second dose, as well as 1 month post third dose, in PWH with and without BTI. BTI was defined as positivity based on self-report measures (data up to last study visit) or IgG data (up to 1 month post dose 3). The self-report measures were based on their symptoms and either a positive PCR or rapid antigen test. The analysis was restricted to persons without previous COVID-19 infection. Persons without BTI remained COVID-19-naïve until ≥3 months following the third dose. Of 289 participants, 92 developed BTI (31.5 infections per 100 person-years). The median days between last vaccination and BTI was 128 (IQR 67, 176), with the most cases occurring between the third and fourth dose (n = 59), corresponding to the Omicron wave. In analyses adjusted for age, sex, race, multimorbidity, hypertension, chronic kidney disease, diabetes and obesity, a lower IgG S/RBD (log10 BAU/mL) at 1 month post dose 3 was significantly associated with BTI, suggesting that a lower IgG level at this time point may predict BTI in this cohort of PWH.

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