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Danilo Bontadi1, Lorenzo Bergamo2, Paola Torri3

  • 1ANMA Associazione Nazionale Medici d'Azienda e Competenti- Sezione Veneto. danilo.bontadi.pd@gmail.com.

La Medicina Del Lavoro
|October 30, 2020
PubMed
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A study of 1,267 workers found a low prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (0.3% viral RNA positive, 1.6% antibody positive). Workplace containment measures appear effective in preventing virus spread among employees.

Area of Science:

  • Occupational Health
  • Infectious Disease Epidemiology
  • Public Health

Background:

  • The COVID-19 pandemic necessitated rapid responses from occupational health physicians to protect workers.
  • A survey was conducted in nine manufacturing companies in Padua, Italy, involving 1,267 workers.
  • The study aimed to determine the prevalence of asymptomatic SARS-CoV-2 and assess workers' immunological status.

Purpose of the Study:

  • To evaluate the effectiveness of workplace measures for containing SARS-CoV-2 spread.
  • To assess the prevalence of SARS-CoV-2 infection and immunity among manufacturing workers.
  • To provide data for public health strategies during the pandemic.

Main Methods:

  • A voluntary survey was administered by trained health physicians in nine manufacturing companies.

Related Experiment Videos

  • Workers underwent nasopharyngeal swabbing for viral RNA detection.
  • Blood tests were performed to detect IgM and IgG antibodies, assessing immunological status.

    • Main Results:

    • The prevalence of workers testing positive for viral RNA via nasopharyngeal swab was 0.3%.
    • Serological testing revealed that 1.6% of the examined workers had positive results for SARS-CoV-2 antibodies.
    • These findings suggest a low infection rate within the studied workforce.

    Conclusions:

    • Workplace containment measures implemented were found to be effective in mitigating SARS-CoV-2 transmission.
    • Working environments did not appear to pose an additional risk for SARS-CoV-2 infection.
    • Quantitative serological tests like CLIA or Elisa are recommended for evaluating workers' immunological status over viral RNA testing alone.