SARS-CoV-2 infection among healthcare workers in a hospital in Madrid, Spain

Source avec lien : Journal of Hospital Infection, (Prépublication), 7/21/2020. 10.1016/j.jhin.2020.07.020

L’objectif de cette étude était de décrire les caractéristiques épidémiologiques et cliniques de la COVID-19 chez les travailleurs de la santé (HCW) entre le 24 février et le 30 avril 2020 dans un hôpital de Madrid, en Espagne.

Aim The aim of this study was to describe the epidemiological and clinical characteristics of COVID-19 among healthcare workers (HCWs) between February 24th to April 30th, 2020 in a hospital in Madrid, Spain. Methods We designed a retrospective cohort study. Cumulative COVID-19 incidence was calculated for all HCWs and categorized according to presumed level of COVID-19 exposure (high, medium and low). Results Among 1,911 HCW, 213 (11.1%) had COVID-19 during the study period. Cases increased gradually from March 8th, peaking in March 17th and declining thereafter. The peak of cases among HCWs was reached 14 days before the peak in admitted COVID-19 cases in the hospital. There were no significant differences in the proportion of COVID-19 cases according to level of occupational exposure (p=0.123). There were 5 departments and 2 professions in which more than 20% of the workers had confirmed COVID-19. We identified temporal clusters in three of these departments and one profession, with most of the cases occurring over a period of less than 5 days. The prevalence of comorbidities was low and 91.5% of patients had mild or moderate symptoms. Eleven patients were admitted to the hospital and 1 patient needed intensive care. None of the patients died. The median time of sick leave was 20 (IQR: 15 – 26) days. Conclusions Our results suggest that HCW-to-HCW transmission accounted for part of the cases. In spite of a low prevalence of comorbidities and a mild clinical course in most cases, COVID-19 caused long periods of sick leave.

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