Evidence map›Paper›PMID 34400220›Full record

ArticleThe Journal of infection2021

Emergence of SARS-CoV-2 Alpha (B.1.1.7) variant, infection rates, antibody seroconversion and seroprevalence rates in secondary school students and staff: Active prospective surveillance, December 2020 to March 2021, England.

Shamez N Ladhani, Georgina Ireland, Frances Baawuah, Joanne Beckmann, Ifeanyichukwu O Okike, Shazaad Ahmad, Joanna Garstang, Andrew J Brent, Bernadette Brent, Felicity Aiano and 12 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infection, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 1 synthesis or guideline 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

22 authors at 8 institutions in 1 country.

Shamez N LadhaniImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom; Paediatric Infectious Diseases Research Group, St. George's University of London, London SW17 0RE, United Kingdom.
Georgina IrelandImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Frances BaawuahImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Joanne BeckmannEast London NHS Foundation Trust, 9 Alie Street, London E1 8DE, United Kingdom.
Ifeanyichukwu O OkikeImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom; University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK, 201 London Road, Derby DE1 2TZ, United Kingdom.
Shazaad AhmadManchester University NHS Foundation Trust, Oxford Road, Manchester M13 9WL, United Kingdom.
Joanna GarstangBirmingham Community Healthcare NHS Trust, Holt Street, Aston B7 4BN, United Kingdom.
Andrew J BrentNuffield Department of Medicine, Oxford University Hospitals NHS Foundation Trust, Old Road, Oxford OX3 7HE, United Kingdom; University of Oxford, Wellington Square, Oxford OX1 2JD, United Kingdom.
Bernadette BrentNuffield Department of Medicine, Oxford University Hospitals NHS Foundation Trust, Old Road, Oxford OX3 7HE, United Kingdom.
Felicity AianoImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Zahin Amin-ChowdhuryImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Meaghan KallImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Ray BorrowPublic Health England, Manchester Royal Infirmary, Manchester, United Kingdom.
Ezra LinleyPublic Health England, Manchester Royal Infirmary, Manchester, United Kingdom.
Maria ZambonImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
John PohImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Lenesha WarrenerImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Angie LackenbyImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Joanna EllisImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Gayatri AmirthalingamImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Kevin E BrownImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Mary E RamsayImmunisation and Countermeasures Division, National Infection Service, Public Health England, 61 Colindale Avenue, London NW9 5EQ, United Kingdom.
Public Health England · GBManchester Royal Infirmary · GBBirmingham Community Healthcare NHS Trust · GBEast London NHS Foundation Trust · GBManchester University NHS Foundation Trust · GBOxford University Hospitals NHS Trust · GBSt George's, University of London · GBUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesWe assessed SARS-CoV-2 infection, seroprevalence and seroconversion in students and staff when secondary schools reopened in March 2021.

methodsWe initiated SARS-CoV-2 surveillance in 18 secondary schools across six regions in September 2020. Participants provided nasal swabs for RT-PCR and blood samples for SARS-CoV-2 antibodies at the beginning (September 2020) and end (December 2020) of the autumn term and at the start of the spring term (March 2021).

findingsIn March 2021, 1895 participants (1100 students:795 staff) were tested; 5.6% (61/1094) students and 4.4% (35/792) staff had laboratory-confirmed SARS-CoV-2 infection from December 2020-March 2021. Nucleoprotein-antibody seroprevalence was 36.3% (370/1018) in students and 31.9% (245/769) in staff, while spike-antibody prevalence was 39.5% (402/1018) and 59.8% (459/769), respectively, similar to regional community seroprevalence. Between December 2020 and March 2021, 14.8% (97/656; 95%CI: 12.2-17.7) students and 10.0% (59/590; 95%CI: 7.7-12.7) staff seroconverted. Weekly seroconversion rates were similar from September to December 2020 (8.0/1000) and from December 2020 to March 2021 (7.9/1000; students: 9.3/1,000; staff: 6.3/1,000).

interpretationBy March 2021, a third of secondary school students and staff had evidence of prior infection based on N-antibody seropositivity, and an additional third of staff had evidence of vaccine-induced immunity based on S-antibody seropositivity.

Indexed as

COVID-19SARS-CoV-2SeroconversionAntibodies, ViralEnglandHumansProspective StudiesSchoolsSeroepidemiologic StudiesStudentsAntibodies, Viral

Identifiers

PMID34400220
PMCPMC8361003
OpenAlexW3194822256

What OpenQuestion holds

Textmetadata
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.