Evidence map›Paper›PMID 34410361›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2022

Post-Vaccination Coronavirus Disease 2019: A Case-Control Study and Genomic Analysis of 119 Breakthrough Infections in Partially Vaccinated Individuals.

Ioannis Baltas, Florencia A T Boshier, Charlotte A Williams, Nadua Bayzid, Marius Cotic, José Afonso Guerra-Assunção, Dianne Irish-Tavares, Tanzina Haque, Jennifer Hart, Sunando Roy and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 17% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 22 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 1 country.

Ioannis BaltasDepartment of Virology, Royal Free London NHS Foundation Trust, London, United Kingdom.ORCID 0000-0002-8008-4835
Florencia A T BoshierDepartment of Infection, Immunity and Inflammation, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Charlotte A WilliamsDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Nadua BayzidDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Marius CoticDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
José Afonso Guerra-AssunçãoDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Dianne Irish-TavaresDepartment of Virology, Royal Free London NHS Foundation Trust, London, United Kingdom.
Tanzina HaqueDepartment of Virology, Royal Free London NHS Foundation Trust, London, United Kingdom.
Jennifer HartDepartment of Virology, Royal Free London NHS Foundation Trust, London, United Kingdom.
Sunando RoyDepartment of Infection, Immunity and Inflammation, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Rachel WilliamsDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Judith BreuerDepartment of Infection, Immunity and Inflammation, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Tabitha W MahunguDepartment of Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Great Ormond Street Hospital · GBRoyal Free London NHS Foundation Trust · GBUniversity College London · GBGreat Ormond Street Hospital for Children NHS Foundation Trust · GB

Funding

Department of HealthMedical Research CouncilWellcome Trust
6 · The paper itself

Abstract

backgroundPost-vaccination infections challenge the control of the coronavirus disease 2019 (COVID-19) pandemic.

methodsWe matched 119 cases of post-vaccination severe acute respiratory syndrome coronavirus 2 infection with BNT162b2 mRNA or ChAdOx1 nCOV-19 to 476 unvaccinated patients with COVID-19 (September 2020-March 2021) according to age and sex. Differences in 60-day all-cause mortality, hospital admission, and hospital length of stay were evaluated. Phylogenetic, single-nucleotide polymorphism (SNP), and minority variant allele (MVA) full-genome sequencing analysis was performed.

resultsOverall, 116 of 119 cases developed COVID-19 post-first vaccination dose (median, 14 days). Thirteen of 119 (10.9%) cases and 158 of 476 (33.2%) controls died (P < .001), corresponding to the 4.5 number needed to treat (NNT). Multivariably, vaccination was associated with a 69.3% (95% confidence interval [CI]: 45.8 to 82.6) relative risk (RR) reduction in mortality. Similar results were seen in subgroup analysis for patients with infection onset ≥14 days after first vaccination and across vaccine subgroups. Hospital admissions (odds ratio, 0.80; 95% CI: .51 to 1.28) and length of stay (-1.89 days; 95% CI: -4.57 to 0.78) were lower for cases, while cycle threshold values were higher (30.8 vs 28.8, P = .053). B.1.1.7 was the predominant lineage in cases (100 of 108, 92.6%) and controls (341 of 446, 76.5%). Genomic analysis identified 1 post-vaccination case that harbored the E484K vaccine-escape mutation (B.1.525 lineage).

conclusionsPrevious vaccination reduces mortality when B.1.1.7 is the predominant lineage. No significant lineage-specific genomic changes during phylogenetic, SNP, and MVA analysis were detected.

Indexed as

COVID-19SARS-CoV-2BNT162 VaccineCase-Control StudiesChAdOx1 nCoV-19GenomicsHumansPhylogenyVaccinationBNT162 VaccineChAdOx1 nCoV-19COVID-19genomicsmortalitymutationvaccination

Identifiers

PMID34410361
PMCPMC8513403
OpenAlexW3195942257

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.