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A cluster-randomised controlled trial to test the efficacy of facemasks in preventing respiratory viral infection among Hajj pilgrims

Citation

Wang, M and Barasheed, O and Rashid, H and Booy, R and El Bashir, H and Haworth, E and Ridda, I and Holmes, EC and Dwyer, DE and Nguyen-Van-Tam, J and Memish, ZA and Heron, L, A cluster-randomised controlled trial to test the efficacy of facemasks in preventing respiratory viral infection among Hajj pilgrims, Journal of Epidemiology and Global Health, 5, (2) pp. 181-189. ISSN 2210-6006 (2015) [Refereed Article]

Copyright Statement

2014 Ministry of Health, Saudi Arabia. Published by Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.jegh.2014.08.002

Abstract

Background: Cost-effective interventions are needed to control the transmission of viral respiratory tract infections (RTIs) in mass gatherings. Facemasks are a promising preventive measure, however, previous studies on the efficacy of facemasks have been inconclusive. This study proposes a large-scale facemask trial during the Hajj pilgrimage in Saudi Arabia and presents this protocol to illustrate its feasibility and to promote both collaboration with other research groups and additional relevant studies.

Methods/design: A cluster-randomised controlled trial is being conducted to test the efficacy of standard facemasks in preventing symptomatic and proven viral RTIs among pilgrims during the Hajj season in Mina, Mecca, Saudi Arabia. The trial will compare the 'supervised use of facemasks' versus 'standard measures' among pilgrims over several Hajj seasons. Cluster-randomisation will be done by accommodation tents with a 1:1 ratio. For the intervention tents, free facemasks will be provided to be worn consistently for 7days. Data on flu-like symptoms and mask use will be recorded in diaries. Nasal samples will be collected from symptomatic recruits and tested for nucleic acid of respiratory viruses. Data obtained from questionnaires, diaries and laboratory tests will be analysed to examine whether mask use significantly reduces the frequency of laboratory-confirmed respiratory viral infection and syndromic RTI as primary outcomes.

Conclusions: This trial will provide valuable evidence on the efficacy of standard facemask use in preventing viral respiratory tract infections at mass gatherings. This study is registered at the Australian New Zealand Clinical Trials Registry (ANZCTR), ACTRN: ACTRN12613001018707 (http://www.anzctr.org.au).

Item Details

Item Type:Refereed Article
Keywords:facemask, Hajj pilgrimage, influenza, Middle East respiratory syndrome coronavirus, viral respiratory tract infection
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Infectious Diseases
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Infectious Diseases
Author:Haworth, E (Dr Elizabeth Haworth)
ID Code:100739
Year Published:2015
Web of Science® Times Cited:5
Deposited By:Menzies Institute for Medical Research
Deposited On:2015-05-27
Last Modified:2016-02-16
Downloads:0

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