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Effects of universal masking on Massachusetts healthcare workers' COVID-19 incidence.
Lan, F-Y; Christophi, C A; Buley, J; Iliaki, E; Bruno-Murtha, L A; Sayah, A J; Kales, S N.
Afiliación
  • Lan FY; Department of Environmental Health, Harvard University T.H. Chan School of Public Health, Boston, MA, USA.
  • Christophi CA; Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
  • Buley J; Department of Environmental Health, Harvard University T.H. Chan School of Public Health, Boston, MA, USA.
  • Iliaki E; Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus.
  • Bruno-Murtha LA; Occupational Medicine, Cambridge Health Alliance, Harvard Medical School, Cambridge, MA, USA.
  • Sayah AJ; Occupational Medicine, Cambridge Health Alliance, Harvard Medical School, Cambridge, MA, USA.
  • Kales SN; Infection Prevention, Infectious Diseases, Cambridge Health Alliance, Harvard Medical School, Cambridge, MA, USA.
Occup Med (Lond) ; 70(8): 606-609, 2020 12 12.
Article en En | MEDLINE | ID: mdl-33225363
BACKGROUND: Healthcare workers (HCWs) and other essential workers are at risk of occupational infection during the COVID-19 pandemic. Several infection control strategies have been implemented. Evidence shows that universal masking can mitigate COVID-19 infection, though existing research is limited by secular trend bias. AIMS: To investigate the effect of hospital universal masking on COVID-19 incidence among HCWs compared to the general population. METHODS: We compared the 7-day average incidence rates between a Massachusetts (USA) healthcare system and Massachusetts residents statewide. The study period was from 17 March (the date of first incident case in the healthcare system) to 6 May (the date Massachusetts implemented public masking). The healthcare system implemented universal masking on 26 March, we allotted a 5-day lag for effect onset and peak COVID-19 incidence in Massachusetts was 20 April. Thus, we categorized 17-31 March as the pre-intervention phase, 1-20 April the intervention phase and 21 April to 6 May the epidemic decline phase. Temporal incidence trends (i.e. 7-day average slopes) were compared using standardized coefficients from linear regression models. RESULTS: The standardized coefficients were similar between the healthcare system and the state in both the pre-intervention and epidemic decline phases. During the intervention phase, the healthcare system's epidemic slope became negative (standardized ß: -0.68, 95% CI: -1.06 to -0.31), while Massachusetts' slope remained positive (standardized ß: 0.99, 95% CI: 0.94 to 1.05). CONCLUSIONS: Universal masking was associated with a decreasing COVID-19 incidence trend among HCWs, while the infection rate continued to rise in the surrounding community.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Control de Infecciones / Personal de Salud / COVID-19 / Máscaras / Enfermedades Profesionales Tipo de estudio: Incidence_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Female / Humans / Male / Middle aged País/Región como asunto: America do norte Idioma: En Revista: Occup Med (Lond) Asunto de la revista: MEDICINA OCUPACIONAL Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Control de Infecciones / Personal de Salud / COVID-19 / Máscaras / Enfermedades Profesionales Tipo de estudio: Incidence_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Female / Humans / Male / Middle aged País/Región como asunto: America do norte Idioma: En Revista: Occup Med (Lond) Asunto de la revista: MEDICINA OCUPACIONAL Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido