A family near the Siberian city of Salekhard. A heat wave is blamed for thawing a 75-year-old reindeer carcass, along with dormant spores of anthrax bacteria that infected it. Sergey Anisimov/Anadolu Agency/Getty Images hide caption

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Sergey Anisimov/Anadolu Agency/Getty Images

Anthrax Outbreak In Russia Thought To Be Result Of Thawing Permafrost

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A security fence surrounds the main part of the U.S. Army's Dugway Proving Ground, a testing laboratory in the Utah desert. The Army says it mistakenly shipped live anthrax from Dugway to several labs in the U.S. and Korea. George Frey/Getty Images hide caption

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George Frey/Getty Images

CDC Investigates Live Anthrax Shipments

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Safe and small: The credit-card-sized test for anthrax destroys the deadly bacteria after the test completes. Courtesy of Sandia Nation hide caption

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Courtesy of Sandia Nation

Safer Anthrax Test Aims To Keep The Bioweapon From Terrorists

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The CDC's director, Tom Frieden, testified before a congressional subcommittee Wednesday regarding a recent anthrax incident and lab safety improvements he is instituting. AFP/Getty Images hide caption

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AFP/Getty Images

Head Scientist At CDC Weighs Costs Of Recent Lab Safety Breaches

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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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Chris Bjornberg/Science Source

Feds Tighten Lab Security After Anthrax, Bird Flu Blunders

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The anthrax vaccine has been given to more than 1 million adults in the military. But no one knows how well it would work in children. Randy Davey/Reuters/Landov hide caption

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Randy Davey/Reuters/Landov

Bioethics Panel Warns Against Anthrax Vaccine Testing On Kids

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Students at the University of Washington used a protein-folding program initially funded by the Defense Advanced Research Projects Agency to come up with a treatment for celiac disease. DARPA hide caption

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DARPA

Paul Keim at work in his lab on the Northern Arizona University campus.

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Charlie McCallie/Northern Arizona University