Evidence map›Paper›PMID 34691195›Full record

ArticleJournal of environmental and public health2021

High Seroprevalence of SARS-CoV-2 (COVID-19)-Specific Antibodies among Healthcare Workers: A Cross-Sectional Study in Guilan, Iran.

Heydar Ali Balou, Tofigh Yaghubi Kalurazi, Farahnaz Joukar, Soheil Hassanipour, Mohammad Shenagari, Mahmoud Khoshsorour, Fariborz Mansour-Ghanaei

Open access · hybridAbstract read
In one paragraph

Article in Journal of environmental and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Seroprevalence of SARS CoV 2 IgG in pandemic frontline healthcare workers.Journal of family medicine and primary care · 2025
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
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 1 institution in 1 country.

Heydar Ali BalouGastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0003-2767-370X
Tofigh Yaghubi KaluraziDepartment of Health, Nutrition & Infectious Diseases, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0002-6042-2331
Farahnaz JoukarGastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0001-8432-8879
Soheil HassanipourGI Cancer Screening and Prevention Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0002-6661-4908
Mohammad ShenagariGastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0003-4221-8748
Mahmoud KhoshsorourCaspian Digestive Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0003-1394-5268
Fariborz Mansour-GhanaeiGastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran.ORCID 0000-0001-6747-0232
Guilan University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: This study was conducted to evaluate the anti-SARS-CoV-2 IgM and IgG antibodies among healthcare workers in Guilan. Methods: This cross-sectional study was conducted on 503 healthcare workers. Between April and May 2020, blood samples were collected from the healthcare workers of Razi Hospital in Rasht, Guilan, Iran. Enzyme-linked immunosorbent assay (ELISA) was used for the detection and quantitation of anti-SARS-CoV-2 IgM/IgG antibodies by using kits made by Pishtaz Teb Company, Tehran, Iran. Results: From a total of 503 participants, the result of the anti-SARS-CoV-2 IgM antibody test was positive in 28 subjects (5.6%) and the anti-SARS-CoV-2 IgG antibody test was positive in171 subjects (34%). Participants in the age group of 35-54 years were significantly more likely to have a positive anti-SARS-CoV-2 antibody test than the age group of 20-34 years (odds ratio = 1.53, 95% CI: 1.04-2.25, Conclusion: The results of the current study indicated that the seroprevalence of COVID-19 was high among healthcare workers of Guilan Province. It seems that this finding was due to the earlier exposure to COVID-19 and the lack of awareness and preparedness to deal with the pandemic in Iran, compared to other countries.

Indexed as

Antibodies, ViralCOVID-19Health PersonnelSARS-CoV-2AdultCross-Sectional StudiesFemaleHumansIranMaleMiddle AgedSeroepidemiologic StudiesYoung AdultAntibodies, Viral

Identifiers

PMID34691195
PMCPMC8536443
OpenAlexW3206197208

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.