P Gautret, V Vu Hai, S Sani, M Doutchi… - Journal of travel …, 2011 - academic.oup.com
Among a cohort of 274 French pilgrims participating in the 2009 Hajj, 77.4% used hand
disinfectant, 89.8% used disposable handkerchiefs, and 79.6% used face masks; 97.4 …