COVID-19 Reinfection and Work Environment Factors Among Healthcare Workers in Vietnam.

Journal of occupational and environmental medicine Pub Date : 2025-06-10 DOI:10.1097/JOM.0000000000003471

Pham Phuong Mai, Le Minh Giang, Dang Thi Huong, Pham Quang Loc, Hoang Thi Hai Van, Hyun Kim, Bruce H Alexander

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Abstract

Objective: To assess COVID-19 reinfection rates among healthcare workers (HCWs) in Vietnam and identify associated work environment risk factors.

Methods: 875 HCWs were followed for 20 to 24 weeks with bi-weekly testing. Risk factor data were collected via self-administered questionnaires. Cumulative incidence proportions and incidence rates were calculated. The associations between reinfection rates and risk factors were analyzed by Cox proportional hazard regression models.

Results: The reinfection rate was 1.11 cases per 1,000 person-days, affecting 12.7% of HCWs. Using all prevention measures in medical settings did not reduce reinfection risk, while adhering to all prevention measures in the community reduced risk. Risk was lower among females, older individuals, and nurses, but higher among unvaccinated or partially vaccinated HCWs.

Conclusion: Further assessment of work- and non-work related risk factors for HCWs COVID-19 reinfection is needed.(STROBE Checklist Item No.1b , http://links.lww.com/JOM/C18).

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越南医护人员COVID-19再感染与工作环境因素

目的：评估越南卫生保健工作者（HCWs）的COVID-19再感染率，并确定相关的工作环境危险因素。方法：875例HCWs患者随访20 ~ 24周，采用双周检测。风险因素数据通过自我管理的问卷收集。计算累积发病率和发病率。采用Cox比例风险回归模型分析再感染率与危险因素之间的关系。结果：再感染率为1.11例/ 1000人日，感染率为12.7%。在医疗环境中采取所有预防措施并没有降低再感染风险，而在社区中坚持采取所有预防措施则降低了风险。女性、老年人和护士的风险较低，但未接种疫苗或部分接种疫苗的卫生保健工作者的风险较高。结论：需要进一步评估医护人员工作和非工作相关的COVID-19再感染危险因素。（频闪检查表第1b项，http://links.lww.com/JOM/C18）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of occupational and environmental medicine

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