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Vaccine shows promise for preventing active TB disease

from The Associated Press via U.S. News & World Report

An experimental vaccine proved 50% effective at preventing latent tuberculosis infection from turning into active disease in a three-year study of adults in Africa. Doctors were encouraged because protection declined only a little after two years, and even a partially effective vaccine would be a big help against TB. The lung disease kills more than a million people a year, mostly in poor countries, and about one-third of the world's people harbor the bacteria that cause it. more


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