ReviewNPJ vaccines2021
Comparative systematic review and meta-analysis of reactogenicity, immunogenicity and efficacy of vaccines against SARS-CoV-2.
Review in NPJ vaccines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 173 papers, 12 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
173 citing papers in PubMed, 12 syntheses or guidelines pooled it, 260 citations in OpenAlex.
- Safety and Efficacy of Respiratory Syncytial Virus Vaccination in Older Adults: Systematic Review and Meta-Analysis of Randomized Controlled Trials.JMIR public health and surveillance · 2025Pooled it
- Efficacy, immunogenicity and safety of respiratory syncytial virus prefusion F vaccine: systematic review and meta-analysis.BMC public health · 2024Pooled it
- Effectiveness and Safety of COVID-19 Vaccinations: An Umbrella Meta-Analysis.International journal of public health · 2023Pooled it
- Immunogenicity Characterization of COVID-19 Vaccines: A Systematic Review and Meta-analysis.Revista da Sociedade Brasileira de Medicina Tropical · 2023Pooled it
- Antibody titers of individuals vaccinated for COVID-19: A systematic review.Journal of biosciences · 2023Pooled it
- The immunogenicity of an inactivated vaccine against SARS-CoV-2 in healthy individuals: A systematic review and meta-analysis.Transplant immunology · 2022Pooled it
- Effectiveness of COVID-19 vaccines against SARS-CoV-2 variants of concern in real-world: a literature review and meta-analysis.Emerging microbes & infections · 2022Pooled it
- COVID-19 vaccination efficacy in numbers including SARS-CoV-2 variants and age comparison: a meta-analysis of randomized clinical trials.Annals of clinical microbiology and antimicrobials · 2022Pooled it
- A systematic review of Vaccine Breakthrough Infections by SARS-CoV-2 Delta Variant.International journal of biological sciences · 2022Pooled it
- Efficacy and safety profile of COVID-19 mRNA vaccine in patients with hematological malignancies: Systematic review and meta-analysis.Frontiers in oncology · 2022Pooled it
- To mix or not to mix? A rapid systematic review of heterologous prime-boost covid-19 vaccination.Expert review of vaccines · 2021Pooled it
- Efficacy, Immunogenicity and Safety of COVID-19 Vaccines: A Systematic Review and Meta-Analysis.Frontiers in immunology · 2021Pooled it
- Variant-Specific IgA Protects Against Omicron Infection.The Journal of infectious diseases · 2024Trial
- A first-in-human trial on the safety and immunogenicity of COVID-eVax, a cellular response-skewed DNA vaccine against COVID-19.Molecular therapy : the journal of the American Society of Gene Therapy · 2023Trial
- Immunogenicity of a Third Dose of BNT162b2 to Ancestral Severe Acute Respiratory Syndrome Coronavirus 2 and the Omicron Variant in Adults Who Received 2 Doses of Inactivated Vaccine.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023Trial
- Trial
- Immunogenicity and reactogenicity of an inactivated SARS-CoV-2 vaccine (BBV152) in children aged 2-18 years: interim data from an open-label, non-randomised, age de-escalation phase 2/3 study.The Lancet. Infectious diseases · 2022Trial
- Effect of a 2-week interruption in methotrexate treatment versus continued treatment on COVID-19 booster vaccine immunity in adults with inflammatory conditions (VROOM study): a randomised, open label, superiority trial.The Lancet. Respiratory medicine · 2022Trial
- Therapeutic vaccination strategy targeting the PreS1 region of L-HBsAg for HBV/HDV co-infection.JHEP reports : innovation in hepatology · 2026Article
- Vaccinology in the twenty-first century revisited.NPJ vaccines · 2026Article
113 more citing papers are in PubMed but not listed here.
Corrections and comments
- Commented on by
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
As SARS-CoV-2 vaccines are deployed worldwide, a comparative evaluation is important to underpin decision-making. We here report a systematic literature review and meta-analysis of Phase I/II/III human trials and non-human primates (NHP) studies, comparing reactogenicity, immunogenicity and efficacy across different vaccine platforms for comparative evaluation (updated to March 22, 2021). Twenty-three NHP and 32 human studies are included. Vaccines result in mostly mild, self-limiting adverse events. Highest spike neutralizing antibody (nAb) responses are identified for the mRNA-1273-SARS-CoV and adjuvanted NVX-CoV2373-SARS-CoV-2 vaccines. ChAdOx-SARS-CoV-2 produces the highest T cell ELISpot responses. Pre-existing nAb against vaccine viral vector are identified following AdH-5-SARS-CoV-2 vaccination, halving immunogenicity. The mRNA vaccines depend on boosting to achieve optimal immunogenicity especially in the elderly. BNT162b2, and mRNA-1273 achieve >94%, rAd26/5 > 91% and ChAdOx-SARS-CoV-2 > 66.7% efficacy. Across different vaccine platforms there are trade-offs between antibody binding, functional nAb titers, T cell frequency, reactogenicity and efficacy. Emergence of variants makes rapid mass rollout of high efficacy vaccines essential to reduce any selective advantage.
Identifiers
What OpenQuestion holds
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.