Holly Pickett/Redux
Patients lie in a Médecins sans Frontières cholera treatment tent at a community health center in Bandim district, Bissau, Guinea-Bissau, Nov. 14, 2012. A cholera epidemic started in April in West Africa's densely-populated, low-lying coastal areas, killing hundreds of people in Sierra Leone and Guinea. By mid-November, more than 2,100 cholera cases had been reported in Guinea-Bissau.