Twins in Malawi helped scientists discover a role the gut microbiome appears to play in severe malnutrition. Photograph courtesy of Tanya Yatsunenko hide caption

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Gut Microbes May Play Deadly Role In Malnutrition

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The British have long said, "Keep calm and carry on." But the catchphrase may need an update for health care. Keepcalm-o-matic.co.uk hide caption

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A boy with multiple Guinea worms sits outside a containment center in northern Ghana, February 2007. Wes Pope/Chicago Tribune/MCT /Landov hide caption

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A copper engraving from 1656 shows a plague doctor in Rome wearing a protective suit and a mask. Artwork by Paul Furst /Wikimedia.org hide caption

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Microbiologist Emma Allen-Vercoe invented the Robogut, a mechanical device that mimics conditions in the human colon. Courtesy of thestar.com hide caption

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Haitians protest against the United Nations peacekeepers in Port-au-Prince in November 2010. Hector Retamal/AFP/Getty Images hide caption

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After Bringing Cholera To Haiti, U.N. Plans To Get Rid Of It

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Jacqueline Syra has been living in the La Piste camp for three years. She says she has no idea when she will be able to leave. David Gilkey/NPR hide caption

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Despite Billions In Aid, Many Haitians Still Live In Squalid Camps

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U.S. Ranks Below 16 Other Rich Countries In Health Report

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In the U.S., doctors no longer have the option of treating gonorrhea with a pill. Instead, they are advised to use an injectable antibiotic, which is still effective against the bacteria. iStockphoto.com hide caption

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Infants used to be born at home to traditional midwives. Mónica Ortiz Uribe hide caption

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Mexico Aims To Save Babies And Moms With Modern Midwifery

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Chiara Andolina, a malaria researcher in Thailand, feeds her mosquito colony by letting the insects bite her right arm. These mosquitoes are picky and will dine only on live human blood. Ben de la Cruz/NPR hide caption

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Mosquito Maven Takes Bites For Malaria Research

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Mosquitoes like this one can carry the virus that causes dengue fever, which may become a bigger problem in some regions as biodiversity is lost. James Gathany/CDC Public Health Image Library hide caption

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The U.S. Army distributed a monthly pinup calendar to GIs, which encouraged them to protect themselves from malaria-carrying mosquitoes. Cartoon by Frank Mack for the U.S. Army./Courtesy of the Images from the History of Medicine. hide caption

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How The U.S. Stopped Malaria, One Cartoon At A Time

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A health official culls chickens on a poultry farm in a village on the outskirts of Katmandu, Nepal. Chickens suspected of being infected with H5N1 bird flu were found in the area in October. Prakash Mathema/AFP/Getty Images hide caption

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