ReviewMicrobial biotechnology2022
COVID-19: Omicron - the latest, the least virulent, but probably not the last variant of concern of SARS-CoV-2.
Review in Microbial biotechnology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
40 citing papers in PubMed.
- Safety and immunogenicity of a modified mRNA-lipid nanoparticle vaccine candidate against COVID-19: Results from a phase 1, dose-escalation study.Human vaccines & immunotherapeutics · 2024Trial
- Efficacy and safety of Reyanning mixture in patients infected with SARS-CoV-2 Omicron variant: A prospective, open-label, randomized controlled trial.Phytomedicine : international journal of phytotherapy and phytopharmacology · 2023Trial
- Increased In-Hospital Mortality in Immunocompromised Individuals Hospitalized With COVID-19 During the Global Pandemic: A Multinational Cohort Study in the EuCARE Project.The Journal of infectious diseases · 2026Article
- Antigenic Variation and Immune Recognition Inference From the COVID-19 Pandemic: An In Silico Comparative Analysis of Spike T Cell Epitopes From the SARS-CoV-2 Variants of Concern.Influenza and other respiratory viruses · 2026Article
- Viral threats to pregnancy: Global health risks in the era of pandemics.Advances in virus research · 2026Review
- Two-year retrospective review of costs associated with COVID-19 case management in Regina, Saskatchewan.Health economics review · 2025Article
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- Identification of an Unnatural Sulfated Monosaccharide as a High-Affinity Ligand for Pan-Variant Targeting of SARS-CoV-2 Spike Glycoprotein.ACS chemical biology · 2025Article
- Clinical manifestations of SARS-CoV-2 Omicron infection is associated with the stage of liver cirrhosis.BMC infectious diseases · 2025Article
- Clinical characteristics and prognosis of COVID-19- associated invasive pulmonary aspergillosis in critically patients: a single-center study.Frontiers in cellular and infection microbiology · 2025Article
- Predictive model for coronavirus disease 2019 severity based on blood biomarkers: a retrospective study.Frontiers in medicine · 2025Article
- Role of Ferroptosis in the Progression of COVID-19 and the Development of Long COVID.Current medicinal chemistry · 2025Article
- The omicron variant of SARS-CoV-2 drove broadly increased seroprevalence in a public university setting.PLOS global public health · 2025Article
- Sequence Matters: Primary COVID-19 Vaccination after Infection Elicits Similar Anti-spike Antibody Levels, but Stronger Antibody Dependent Cell-mediated Cytotoxicity than Breakthrough Infection.Journal of immunology (Baltimore, Md. : 1950) · 2024Article
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- Preeclampsia in the Context of COVID-19: Mechanisms, Pathophysiology, and Clinical Outcomes.American journal of reproductive immunology (New York, N.Y. : 1989) · 2024Review
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- Vaccination against COVID-19 - risks and benefits in children.European journal of pediatrics · 2024Review
- Analysis of SARS-CoV-2 genome evolutionary patterns.Microbiology spectrum · 2024Article
Corrections and comments
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Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Omicron variant rapidly became the dominant SARS-CoV-2 strain in South Africa and elsewhere. This review explores whether this rise was due to an increased transmission of the variant or its escape from population immunity by an extensively mutated spike protein. The mutations affected the structure of the spike protein leading to the loss of neutralization by most, but not all, therapeutic monoclonal antibodies. Omicron also shows substantial immune escape from serum antibodies in convalescent patients and vaccinees. A booster immunization increased, however, the titre and breadth of antiviral antibody response. The cellular immune response against Omicron was largely preserved explaining a satisfying protection of boosted vaccinees against severe infections. Clinicians observed less severe infection with Omicron, but other scientists warned that this must not necessarily reflect less intrinsic virulence. However, in animal experiments with mice and hamsters, Omicron infections also displayed a lesser virulence than previous VOCs and lung functions were less compromised. Cell biologists demonstrated that Omicron differs from Delta by preferring the endocytic pathway for cell entry over fusion with the plasma membrane which might explain Omicron's distinct replication along the respiratory tract compared with Delta. Omicron represents a distinct evolutionary lineage that deviated from the mainstream of evolving SARS-CoV-2 already in mid-2020 raising questions about where it circulated before getting widespread in December 2021. The role of Omicron for the future trajectory of the COVID-19 pandemic is discussed.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.