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Previous exposure to Spike-providing parental strains confers neutralizing immunity to XBB lineage and other SARS-CoV-2 recombinants in the context of vaccination

Journal Article · · Emerging Microbes & Infections
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  1. Gladstone Institutes, San Francisco, CA (United States)
  2. Curative Inc., Monrovia, CA (United States)
  3. Gladstone Institutes, San Francisco, CA (United States); University of California, Berkeley, CA (United States)
  4. Gladstone Institutes, San Francisco, CA (United States); University of California, Berkeley, CA (United States); Univ. of California, San Francisco, CA (United States). Quantitative Biosciences Institute COVID-19 Research Group (QCRG)
  5. Univ. of California, San Francisco, CA (United States)
  6. Gladstone Institutes, San Francisco, CA (United States); University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  7. Univ. of California, San Francisco, CA (United States); University of California, Berkeley, CA (United States); UCSF-Abbott Viral Diagnostics and Discovery Center, San Francisco, CA (United States)
  8. Gladstone Institutes, San Francisco, CA (United States); University of California, Berkeley, CA (United States); Univ. of California, San Francisco, CA (United States). Quantitative Biosciences Institute COVID-19 Research Group (QCRG); Chan Zuckerberg Biohub, San Francisco, CA (United States)
The emergence of SARS-CoV-2 recombinants is of particular concern as they can result in a sudden increase in immune evasion due to antigenic shift. Recent recombinants XBB and XBB.1.5 have higher transmissibility than previous recombinants such as “Deltacron.” We hypothesized that immunity to a SARS-CoV-2 recombinant depends on prior exposure to its parental strains. To test this hypothesis, we examined whether Delta or Omicron (BA.1 or BA.2) immunity conferred through infection, vaccination, or breakthrough infection could neutralize Deltacron and XBB/XBB.1.5 recombinants. We found that Delta, BA.1, or BA.2 breakthrough infections provided better immune protection against Deltacron and its parental strains than did the vaccine booster. None of the sera were effective at neutralizing the XBB lineage or its parent BA.2.75.2, except for the sera from the BA.2 breakthrough group. These results support our hypothesis. In turn, our findings underscore the importance of multivalent vaccines that correspond to the antigenic profile of circulating variants of concern and of variant-specific diagnostics that may guide public health and individual decisions in response to emerging SARS-CoV-2 recombinants.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Institutes of Health (NIH); US Centers for Disease Control and Prevention (CDC); USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2470848
Journal Information:
Emerging Microbes & Infections, Journal Name: Emerging Microbes & Infections Journal Issue: 2 Vol. 12; ISSN 2222-1751
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Evolution of the SARS‐CoV‐2 omicron variants BA.1 to BA.5: Implications for immune escape and transmission journal July 2022
Omicron sublineage BA.2.75.2 exhibits extensive escape from neutralising antibodies journal November 2022
ACE2 binding and antibody evasion in enhanced transmissibility of XBB.1.5 journal March 2023
mRNA-based COVID-19 vaccine boosters induce neutralizing immunity against SARS-CoV-2 Omicron variant journal February 2022
Virological characteristics of the SARS-CoV-2 Omicron BA.2 spike journal June 2022
Delta-Omicron recombinant escapes therapeutic antibody neutralization journal February 2023
Tracking SARS-CoV-2 Omicron diverse spike gene mutations identifies multiple inter-variant recombination events journal April 2022
Rapid assembly of SARS-CoV-2 genomes reveals attenuation of the Omicron BA.1 variant through NSP6 journal April 2023
SARS-CoV-2 Omicron is an immune escape variant with an altered cell entry pathway journal July 2022
SARS-CoV-2 variant biology: immune escape, transmission and fitness journal January 2023
Limited cross-variant immunity from SARS-CoV-2 Omicron without vaccination journal May 2022
mRNA booster immunization elicits potent neutralizing serum activity against the SARS-CoV-2 Omicron variant journal January 2022
Low neutralization of SARS-CoV-2 Omicron BA.2.75.2, BQ.1.1 and XBB.1 by parental mRNA vaccine or a BA.5 bivalent booster journal December 2022
Male gender is a predictor of higher mortality in hospitalized adults with COVID-19 journal July 2021
The influence of gender on COVID-19 infections and mortality in Germany: Insights from age- and gender-specific modeling of contact rates, infections, and deaths in the early phase of the pandemic journal May 2022
SARS-CoV-2 Delta–Omicron Recombinant Viruses, United States journal July 2022


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