Two women check their cellphones as they hawk their wares on a bridge over the Artibonite River, whose waters are believed to be the source of Haiti's 2010 cholera outbreak.
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Women hold mosquito nets after receiving them at a distribution point in Sesheke, Zambia. Researchers say malaria may have rebounded in some parts of Zambia and Senegal because of resistance to the insecticide-treated nets.
Although various types of contraceptive methods are available in Nigeria, about 20 percent of women say they're not able to access them. Sometimes their husbands stand in the way.
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