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Globally, an estimated 2.5 billion people lack access to improved sanitation.
Cholera remains a significant threat to global public health with an estimated 100,000 deaths per year.
Mount Sinabung erupted in September 2013, causing the mass evacuation of more than 30,000 people.
Point-of-use water treatment (PoUWT), such as boiling or chlorine disinfection, has long been recommended in emergencies.
Tropical Storm Jeanne struck Haiti in September 2004, causing widespread flooding which contaminated water sources, displaced thousa