Specific risk factors for SARS-CoV-2 transmission among health care workers in a university hospital

Source avec lien : American Journal of Infection Control, (Prépublication), 8/5/2020. 10.1016/j.ajic.2020.07.039

Objectif Étudier les facteurs de risque spécifiques de transmission du SRAS-CoV-2 parmi les travailleurs de la santé dans un hôpital universitaire de soins tertiaires Méthodes Des échantillons de travailleurs de la santé des voies respiratoires supérieures ont été testés par RT-PCR pour le SRAS-CoV-2. Une étude cas-témoin a été menée afin d’explorer les facteurs de risque possibles qui conduisent à la transmission du CoV-2 du SRAS aux travailleurs de la santé

Aim To investigate the specific risk factors for SARS-CoV-2 transmission among HCWs in a tertiary care university hospital Methods Upper respiratory samples of HCWs were tested for SARS-CoV-2 by RT-PCR. A case-control study was conducted to explore the possible risk factors that lead to SARS-CoV-2 transmission to HCWs Results Of 703 HCWs screened between March 20 and May 20, 2020, 50 (7.1%) were found to be positive for SARS-CoV-2. The positivity rates for SARS-CoV-2 among physicians, nurses, cleaning personnel, and the other occupations were 6.3%, 8.0%, 9.1%, and 2.6%, respectively. The infection rate was 8.3% among HCWs who worked in COVID-19 units and 3.4% among those who did not work in COVID-19 units (RR = 2.449, CI = 1.062–5.649, p= .027). The presence of a SARS-CoV-2 positive person in the household (p = .016), inappropriate use of personnel protective equipment (PPE) while caring for patients with COVID-19 infection (p > = .003), staying in the same personnel break room as an HCW without a medical mask for more than 15 minutes (p = .000), consuming food within one meter of an HCW (p = .003), and failure to keep a safe social distance from an HCW (p = .003) were statistically significant risk factors for infection. Conclusion HCWs have a high risk for SARS-CoV-2 transmission while providing care to COVID-19 patients. Transmission may also occur in non-medical areas of the hospital while speaking or eating. Periodic screening of HCWs for SARS-CoV-2 may enable early detection and isolation of infected HCWs.

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