Evidence map›Paper›PMID 37401478›Full record

ArticleEpidemiology and infection2023

Superspreading of SARS-CoV-2 Omicron BA.2.23 among vaccinated Finnish adults: symptomatic COVID-19 only contracted by those without recent infection.

Marianna Riekkinen, Mikael Kajova, Mari Eriksson, Annika Luukkainen, Ville Holmberg, Tuomas Aro, Sari H Pakkanen, Simo Miettinen, Reetta Montonen, Teemu Smura and 2 more

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Epidemiology and infection, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact, top 88% 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

0 citing papers in PubMed, 0 citations in OpenAlex.

No citing paper in PubMed yet.

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

12 authors at 1 institution in 1 country.

Marianna RiekkinenDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Mikael KajovaDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Mari ErikssonDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Annika LuukkainenDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Ville HolmbergDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Tuomas AroDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Sari H PakkanenHuman Microbiome Research Unit, University of Helsinki, Helsinki, Finland.
Simo MiettinenDepartment of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Reetta MontonenDepartment of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Teemu SmuraDepartment of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Tinja LääveriDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
Anu KanteleDepartment of Infectious Diseases, Inflammation Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.ORCID 0000-0002-0004-1000
University of Helsinki · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An outbreak of SARS-CoV-2 was confirmed after an academic party in Helsinki, Finland, in 2022. All 70 guests were requested to fill in follow-up questionnaires; serologic analyses and whole-genome sequencing (WGS) were conducted when possible.Of those participating - all but one with ≥3 vaccine doses - 21/53 (40%) had test-confirmed symptomatic COVID-19: 7% of those with earlier episodes and 76% of those without. Half (11/21) were febrile, but none needed hospitalisation. WGS revealed subvariant BA.2.23.Compared to vaccination alone, our data suggest remarkable protection by hybrid immunity against symptomatic infection, particularly in instances of recent infections with homologous variants.

Indexed as

COVID-19Disease OutbreaksFeverFinlandHumansSARS-CoV-2COVID-19hybrid immunityOmicronSARS-CoV-2superspreading event

Identifiers

PMID37401478
PMCPMC10368952
OpenAlexW4383058782

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.