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Impact of community masking on COVID-19: A cluster-randomized trial in Bangladesh.
Abaluck, Jason; Kwong, Laura H; Styczynski, Ashley; Haque, Ashraful; Kabir, Md Alamgir; Bates-Jefferys, Ellen; Crawford, Emily; Benjamin-Chung, Jade; Raihan, Shabib; Rahman, Shadman; Benhachmi, Salim; Bintee, Neeti Zaman; Winch, Peter J; Hossain, Maqsud; Reza, Hasan Mahmud; Jaber, Abdullah All; Momen, Shawkee Gulshan; Rahman, Aura; Banti, Faika Laz; Huq, Tahrima Saiha; Luby, Stephen P; Mobarak, Ahmed Mushfiq.
  • Abaluck J; Yale School of Management, Yale University, New Haven, CT, USA.
  • Kwong LH; Woods Institute for the Environment, Stanford University, Stanford, CA, USA.
  • Styczynski A; Division of Environmental Health Sciences, University of California, Berkeley, Berkeley, CA, USA.
  • Haque A; Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, CA, USA.
  • Kabir MA; Innovations for Poverty Action Bangladesh, Dhaka, Bangladesh.
  • Bates-Jefferys E; Innovations for Poverty Action Bangladesh, Dhaka, Bangladesh.
  • Crawford E; Innovations for Poverty Action, Evanston, IL, USA.
  • Benjamin-Chung J; Yale School of Management, Yale University, New Haven, CT, USA.
  • Raihan S; Department of Epidemiology and Population Health, School of Medicine, Stanford University, Stanford, CA, USA.
  • Rahman S; Innovations for Poverty Action Bangladesh, Dhaka, Bangladesh.
  • Benhachmi S; Innovations for Poverty Action Bangladesh, Dhaka, Bangladesh.
  • Bintee NZ; Yale Research Initiative on Innovation and Scale, Yale University, New Haven, CT, USA.
  • Winch PJ; Innovations for Poverty Action Bangladesh, Dhaka, Bangladesh.
  • Hossain M; Social and Behavioral Interventions Program, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
  • Reza HM; NGRI, North South University, Dhaka, Bangladesh.
  • Jaber AA; Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh.
  • Momen SG; NGRI, North South University, Dhaka, Bangladesh.
  • Rahman A; NGRI, North South University, Dhaka, Bangladesh.
  • Banti FL; NGRI, North South University, Dhaka, Bangladesh.
  • Huq TS; NGRI, North South University, Dhaka, Bangladesh.
  • Luby SP; NGRI, North South University, Dhaka, Bangladesh.
  • Mobarak AM; Woods Institute for the Environment, Stanford University, Stanford, CA, USA.
Science ; 375(6577): eabi9069, 2022 Jan 14.
Article in English | MEDLINE | ID: covidwho-1642796
ABSTRACT
We conducted a cluster-randomized trial to measure the effect of community-level mask distribution and promotion on symptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections in rural Bangladesh from November 2020 to April 2021 (N = 600 villages, N = 342,183 adults). We cross-randomized mask type (cloth versus surgical) and promotion strategies at the village and household level. Proper mask-wearing increased from 13.3% in the control group to 42.3% in the intervention arm (adjusted percentage point difference = 0.29; 95% confidence interval = [0.26, 0.31]). The intervention reduced symptomatic seroprevalence (adjusted prevalence ratio = 0.91 [0.82, 1.00]), especially among adults ≥60 years old in villages where surgical masks were distributed (adjusted prevalence ratio = 0.65 [0.45, 0.85]). Mask distribution with promotion was a scalable and effective method to reduce symptomatic SARS-CoV-2 infections.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Communicable Disease Control / COVID-19 / Health Promotion / Masks Type of study: Experimental Studies / Observational study / Randomized controlled trials Limits: Female / Humans / Male Country/Region as subject: Asia Language: English Journal: Science Year: 2022 Document Type: Article Affiliation country: Science.abi9069

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Communicable Disease Control / COVID-19 / Health Promotion / Masks Type of study: Experimental Studies / Observational study / Randomized controlled trials Limits: Female / Humans / Male Country/Region as subject: Asia Language: English Journal: Science Year: 2022 Document Type: Article Affiliation country: Science.abi9069