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Abstract

Recent 2022 SARS-CoV-2 Omicron variants, have acquired resistance to most neutralizing anti-Spike monoclonal antibodies authorized, and the BQ.1.* sublineages are notably resistant to all authorized monoclonal antibodies. Polyclonal antibodies from individuals both vaccinated and recently recovered from Omicron COVID-19 (VaxCCP) could retain new Omicron neutralizing activity. Here we reviewed BQ.1.* virus neutralization data from 920 individual patient samples from 43 separate cohorts defined by boosted vaccinations (Vax) with or without recent Omicron COVID-19, as well as infection without vaccination (CCP) to determine level of BQ.1.* neutralizing antibodies and percent of plasma samples with neutralizing activity. More than 90 % of the plasma samples from individuals in the recently (within 6 months) boosted VaxCCP study cohorts neutralized BQ.1.1, and BF.7 with 100 % neutralization of WA-1, BA.4/5, BA.4.6 and BA.2.75. The geometric mean of the geometric mean 50 % neutralizing titres (GM (GMT) were 314, 78 and 204 for BQ.1.1, XBB.1 and BF.7, respectively. Compared to VaxCCP, plasma sampled from COVID-19 naïve subjects who also recently (within 6 months) received at least a third vaccine dose had about half of the GM (GMT) for all viral variants. Boosted VaxCCP characterized by either recent vaccine dose or infection event within 6 months represents a robust, variant-resilient, neutralizing antibody source against the new Omicron BQ.1.1, XBB.1 and BF.7 variants.

Funding
This study was supported by the:
  • National Center for Advancing Translational Sciences (Award UL1TR003098)
    • Principle Award Recipient: ApplicableNot
  • National Center for Advancing Translational Sciences (Award U24TR001609-S3)
    • Principle Award Recipient: ApplicableNot
  • National Institute of Allergy and Infectious Diseases (Award 3R01AI152078-01S1)
    • Principle Award Recipient: CasadevallArturo
  • State of Maryland
    • Principle Award Recipient: J SullivanDavid
  • Bloomberg Family Foundation
    • Principle Award Recipient: J SullivanDavid
  • U.S. Department of Defense (Award W911QY2090012)
    • Principle Award Recipient: J SullivanDavid
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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/content/journal/jgv/10.1099/jgv.0.001854
2023-05-11
2024-05-08
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