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Predictors of seropositivity to SARS-CoV-2 among employees at a large urban medical center

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2024年10月9日

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  • Deborah Kupferwasser,
  • Evelyn A. Flores,
  • Prudencio Merino,
  • Donna Phan Tran,
  • Honghu Liu,
  • Yilan Huang,
  • Michael Bolaris,
  • Megan H. Nguyen,
  • Mildred Gonzales,
  • Wellington Da Silva,
  • Leslie Astorga-Cook,
  • Angel Abueg,
  • Holli Mason,
  • Loren G. Miller

摘要

Background

Before SARS-CoV-2 vaccination availability, medical center employees were at high risk of COVID-19. However, risk factors for SARS-CoV-2 infection in medical center employees, both healthcare and non-healthcare workers, are poorly understood.

Methods

From September-December 2020, free IgG antibody testing was offered to all employees at a large urban medical center. Participants were asked to complete a questionnaire on work and non-work related risk factors for COVID-19 infection.

Results

SARS-CoV-2 seropositivity was found in 4.7%. Seropositivity was associated with close contact with COVID-19 cases with or without the use of adequate personal protective equipment (PPE), (OR 3.1 [95% CI 1.4–6.9] and OR 4.7 [95% CI 2.0–11.0] respectively), never wearing a mask outside of work (OR 10.1 [95% CI 1.9–57]), and Native Hawaiian/Pacific Islander race (OR 6.3 95% CI (1.6–25)].

Conclusions

Among workers in a large urban medical center, SARS-CoV-2 seropositivity was associated with work-related COVID-19 close contacts and low mask use outside of work, suggesting that non-workplace close contacts are also relevant routes of COVID-19 spread among healthcare workers.