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FILE - In this Oct. 19, 2011, file photo, a woman holds her sick child while he receives treatment for cholera at a Doctors Without Borders, MSF, cholera clinic in Port-au-Prince, Haiti. Top U.N. envoy Sandra Honore said this Monday March 24, 2014, that Haiti's cholera outbreak is still the worst in the world. Health officials in Haiti say the epidemic has killed more than 8,000 people. (AP Photo/Ramon Espinosa, File)

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