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The Ebola virus disease (EVD) epidemic entered Liberia through Lofa County in February 2014 and spread to two heal
Mount Sinabung erupted in September 2013, causing the mass evacuation of more than 30,000 people.
Most households in the districts of Sri Lanka affected by the tsunami possessed drinking water wells, and these wells were contamina
Batch water treatment consists of the intermittent use of settling tanks for water clarification, and is a common treatment practice