Protective equipment is in short supply. Here, a Liberian burial team carefully disinfects its gloves before disposing of them. John Moore/Getty Images hide caption

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Why Ebola Is Making It Harder To Provide Good Health Care

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A health worker cleans his hands with chlorinated water before entering an Ebola screening tent at the Kenema Government Hospital in Sierra Leone. More than 300 Sierra Leoneans have died of the disease. Michael Duff/AP hide caption

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Even With $100 Million, WHO Says It Will Take Months To Control Ebola

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Why Is There No Drug To Treat Ebola?

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In 1995, amid an Ebola outbreak, Zairian Red Cross personnel picked up sick people and bodies left on the streets of Kikwit, 250 miles from the capital Kinshasa. Jean-Marc Bouju/AP hide caption

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Why Treating Ebola With An Experimental Serum Might Help

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Particles of H5N1 virus — a particularly dangerous type of bird flu that can infect people — attack lung cells. Chris Bjornberg/Science Source hide caption

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Feds Tighten Lab Security After Anthrax, Bird Flu Blunders

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Human immunodeficiency virus Type 1 inserts its genetic material into the DNA of human cells, turning them into little HIV factories. Eye of Science/Science Source hide caption

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Mississippi Child Thought Cured Of HIV Shows Signs Of Infection

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HIV Returns In Infected Toddler, Dashing Hopes Of Imminent Cure

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Like All Animals, We Need Stress. Just Not Too Much

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Doctors used a rapid DNA test to identify a Wisconsin teen's unusual infection with Leptospira bacteria (yellow), which are common in the tropics. CDC/Rob Weyant hide caption

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Quick DNA Tests Crack Medical Mysteries Otherwise Missed

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Red blood cells infected with the Plasmodium falciparum parasite. Plasmodium is the parasite that triggers malaria in people. Gary D. Gaugler/Science Source hide caption

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Experimental Malaria Vaccine Blocks The Bad Guy's Exit

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