ArticleEBioMedicine2024
Bivalent Omicron BA.1 vaccine booster increases memory B cell breadth and neutralising antibodies against emerging SARS-CoV-2 variants.
Article in EBioMedicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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Who cites it
4 citing papers in PubMed.
- Humoral epitope dominance and immune imprinting by SARS-CoV-1 and SARS-CoV-2 vaccines.Immunology and cell biology · 2026Article
- COVID-19 mRNA vaccines: a prospective outlook from technological innovation to clinical practice.Frontiers in immunology · 2026Review
- Next-Generation Adenoviral Vector-Based Vaccines for Severe Acute Respiratory Syndrome Coronavirus-2.Vaccines · 2025Review
- Efficacy of Inactivated Bivalent SARS-CoV-2 Vaccines Targeting Ancestral Strain (ERAGEM), Delta, and Omicron Variants.Vaccines · 2025Article
Corrections and comments
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Authors and funding
24 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCurrent literature informs us that bivalent vaccines will generate a broader serum neutralizing antibody response to multiple SARS-CoV-2 variants, but studies on how this breadth relates to the memory B cell (MBC) and T cell responses are sparse. This study compared breadth of neutralising antibody, and memory B and T cell responses to monovalent or a bivalent ancestral/Omicron BA.1 COVID-19 booster vaccine.
methodsAt baseline and 1-month post-booster, neutralisation activity and frequencies of receptor binding domain (RBD)-specific MBCs and Spike-specific memory T cells were measured against a panel of variants.
findingsBoth vaccines boosted neutralising antibodies to 5 variants - Wuhan-Hu-1, Delta, BA.1, BA.5 and JN.1, the latter of which had not yet emerged at the time of sample collection. The bivalent vaccine induced a significantly larger increase in nAb against BA.1 and JN.1. Both vaccines boosted RBD-specific MBC responses to Wuhan-Hu-1, Delta, BA.1 and BA.5 variants with a significantly greater increase for BA.1 in the bivalent group. The breadth of MBCs was significantly higher in those who received the bivalent boost and correlated with nAb breadth. Both vaccines significantly boosted Spike-specific T cell responses to the Wuhan-Hu-1 and BA.5 variants, but only the bivalent vaccine boosted BA.1 responses.
interpretationThese results suggest that the bivalent vaccine confers an advantage against future novel variants due to increased frequency of broadly reactive RBD-specific B cells.
fundingWork supported by NSW Health for the NSW Vaccine, Infection and Immunology Collaborative (VIIM).
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