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Globally, an estimated 2.5 billion people lack access to improved sanitation.
Background: Refugees are at high risk for communicable diseases due to overcrowding and poor water, sanitation,
Mount Sinabung erupted in September 2013, causing the mass evacuation of more than 30,000 people.
In July 2007, a study by the Centre for Environmental Health Engineering, at the University of Surrey, assessed a modified method of