Evidence map›Paper›PMID 34582483›Full record

ArticlePloS one2021

Risk for SARS-CoV-2 infection in healthcare workers outside hospitals: A real-life immuno-virological study during the first wave of the COVID-19 epidemic.

Maria Fröberg, Sadaf Sakina Hassan, Ville N Pimenoff, Susanne Akterin, Kalle Conneryd Lundgren, K Miriam Elfström, Joakim Dillner

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 39% 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

3 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Article
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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

7 authors at 2 institutions in 1 country.

Maria FröbergGustavsberg Primary Care Center, Region Stockholm, Gustavsberg, Sweden.
Sadaf Sakina HassanDepartment of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden.
Ville N PimenoffDepartment of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden.
Susanne AkterinKarolinska University Hospital, Stockholm, Sweden.
Kalle Conneryd LundgrenKarolinska University Hospital, Stockholm, Sweden.
K Miriam ElfströmMedical Diagnostics Karolinska, Karolinska University Hospital, Stockholm, Sweden.
Joakim DillnerDepartment of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden.ORCID 0000-0001-8588-6506
Karolinska University Hospital · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesMost COVID-19 related infections and deaths may occur in healthcare outside hospitals. Here we explored SARS-CoV-2 infections among healthcare workers (HCWs) in this setting.

designAll healthcare providers in Stockholm, Sweden were asked to recruit HCWs at work for a study of past or present SARS-CoV-2 infections among HCWs. Study participants This study reports the results from 839 HCWs, mostly employees of primary care centers, sampled in June 2020.

resultsSARS-CoV-2 seropositivity was found among 12% (100/839) of HCWs, ranging from 0% to 29% between care units. Seropositivity decreased by age and was highest among HCWs <40 years of age. Within this age group there was 19% (23/120) seropositivity among women and 11% (15/138) among men (p<0.02). Current infection, as measured using PCR, was found in only 1% and the typical testing pattern of pre-symptomatic potential "superspreaders" found in only 2/839 subjects.

conclusionsPrevious SARS-CoV-2 infections were common among younger HCWs in this setting. Pre-symptomatic infection was uncommon, in line with the strong variability in SARS-CoV-2 exposure between units. Prioritizing infection prevention and control including sufficient and adequate personal protective equipment, and vaccination for all HCWs are important to prevent nosocomial infections and infections as occupational injuries during an ongoing pandemic.

Indexed as

AdultCOVID-19FemaleHealth PersonnelHospitalsHumansMaleMiddle AgedPandemicsPersonal Protective EquipmentRisk FactorsSARS-CoV-2Sweden

Identifiers

PMID34582483
PMCPMC8478233
OpenAlexW3202495287

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.