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Article

Impact of SARS-CoV-2 pandemic among health care workers in a secondary teaching hospital in Spain

Publicated to:Plos One. 16 (1): e0245001- - 2021-01-14 16(1), DOI: 10.1371/journal.pone.0245001

Authors: Garralda Fernandez, Javier; Molero Vilches, Ignacio; Bermejo Rodriguez, Alfredo; Cano Torres, Isabel; Colino Romay, Elda Isabel; Garcia Arata, Isabel; Jaqueti Aroca, Jeronimo; Lillo Rodriguez, Rosa; Lopez Lacomba, Daniel; Mazon Cuadrado, Luis; Molina Esteban, Laura; Morales Garcia, Luis Javier; Moratilla Monzo, Laura; Nieto-Borrajo, Elva; Pacheco Delgado, Maria; Prieto Menchero, Santiago; Sanchez Hernandez, Cristina; Sanchez Testillano, Eva; Garcia-Martinez, Jesus

Affiliations

Hosp Univ Fuenlabrada, Lab Med, Fuenlabrada, Spain - Author
Hosp Univ Fuenlabrada, Occupat Hlth Serv, Fuenlabrada, Spain - Author
Hosp Univ Fuenlabrada, Prevent Med Serv, Fuenlabrada, Spain - Author
Univ Rey Juan Carlos, Escuela Int Doctorado, Madrid, Spain - Author
Univ Rey Juan Carlos, Fac Hlth Sci, Madrid, Spain - Author
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Abstract

Background The COVID-19 pandemic has posed a huge challenge to healthcare systems and their personnel worldwide. The study of the impact of SARS-CoV-2 infection among healthcare workers (HCW), through prevalence studies, will let us know viral expansion, individuals at most risk and the most exposed areas in healthcare organizations. The aim of this study is to gauge the impact of SARS-CoV-2 pandemic in our hospital workforce and identify groups and areas at increased risk. Methods and findings This is a cross-sectional and incidence study carried out on healthcare workers based on molecular and serological diagnosis of SARS-CoV-2 infection. Of the 3013 HCW invited to participate, 2439 (80.9%) were recruited, including 674 (22.4%) who had previously consulted at the Occupational Health Service (OHS) for confirmed exposure and/or presenting symptoms suggestive of COVID-19. A total of 411 (16.9%) and 264 (10.8%) healthcare workers were SARS-CoV-2 IgG and rRT-PCR positive, respectively. The cumulative prevalence considering all studies (IgG positive HCW and/or rRT-PCR positive detection) was 485 (19.9%). SARS-CoV-2 IgG-positive patients in whom the virus was not detected were 221 (9.1%); up to 151 of them (68.3%) did not report any compatible symptoms nor consult at the OHS for this reason. Men became more infected than women (25% vs 18.5%, p = 0.0009), including when data were also classified by age. COVID-19 cumulative prevalence among the HCW assigned to medical departments was higher (25.2%) than others, as well as among medical staff (25.4%) compared with other professional categories (p<0.01). Conclusions The global impact of the COVID-19 pandemic on HCW of our centre has been 19.9%. Doctors and medical services personnel have had the highest prevalence of SARS-CoV-2 infection, but many of them have not presented compatible symptoms. This emphasizes the performance of continuous surveillance methods of the most exposed health personnel and not only based on the appearance of symptoms.

Keywords

AdultAgedAntibody detectionArticleCohort analysisCohort studiesConsultationControlled studyCoronavirus disease 2019Covid-19Cross-sectional studiesCross-sectional studyEpidemiologyFemaleHealth care personnelHealth personnelHealth practitionerHealth workforceHigh risk populationHospital departmentHospital personnelHospitals, teachingHumanHumansImmunoglobulin gIncidenceInfection riskIsolation and purificationMajor clinical studyMaleMedical staffMiddle agedMolecular diagnosisOccupational exposureOccupational health servicePandemicPandemicsPrevalencePsychologyReal time reverse transcription polymerase chain reactionRisk factorRisk factorsSars-cov-2Sars-cov-2 antibodySecondary care centerSerologySevere acute respiratory syndrome coronavirus 2Sex differenceSpainSymptomTeaching hospital

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Plos One due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.24. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.26 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 9.55 (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-17, the following number of citations:

  • WoS: 24
  • Scopus: 26
  • Europe PMC: 22
  • OpenCitations: 24

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-17:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 126.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 126 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 3.35.
  • The number of mentions on the social network X (formerly Twitter): 5 (Altmetric).