ArticleScientific reports2025
Differential immunity induced by Omicron sublineages in naïve and vaccine breakthrough infections.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed.
- SARS-CoV-2 Exposure Elicits a Strong Mucosal Antibody Response That May Facilitate Quicker Mucosal Viral Clearance.Viruses · 2026Article
- Predictors of Severe Outcomes in COVID-19: Evidence from Real-World Multicenter Retrospective Study (2020-2024).Journal of clinical medicine · 2026Article
- Article
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
The emergence of the Omicron variant in late 2021 gave rise to multiple descendent lineages, or sublineages, with progressively increased capacity for antibody evasion. Here we used live virus neutralization assays to quantify and compare homologous ("self") and cross-neutralizing antibody titers in 170 COVID-19 patients infected with either the Delta variant or an Omicron sublineage (BA.1, BA.2, BA.4/BA.5, BQ.1.1, and XBB.1.5) and 25 uninfected controls who had received the BA.5 bivalent booster vaccine. In control subjects, neutralizing antibody titers against BA.5 and earlier sublineages were significantly higher than against the later BQ.1.1 or XBB.1.5 sublineages, and differences in antibody titers between immunocompetent and immunocompromised individuals were not significant. In patients infected with an Omicron sublineage, induced cross-neutralizing antibody responses were weaker and less durable against later compared to earlier sublineages. Self-neutralizing antibody titers against BQ.1.1 or XBB.1.5 in patients infected with these sublineages were also lower than cross-neutralizing titers against earlier sublineages. Our results suggest that immunological imprinting resulting from prior exposure to SARS-CoV-2 ("original antigenic sin"), whether via natural infection or vaccination, may have impaired neutralizing antibody responses to the later Omicron sublineages. The poorer elicited immunogenicity and increased capacity for antibody evasion of these sublineages explain in part their persistence and ongoing global circulation.
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Registered trials
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