On Wednesday, researchers said that tuberculosis is at least 3,000 years older than previously thought. They have discovered the disease in 9,000 year-old human bones found off the coast of Israel. Tuberculosis is caused by Mycobacterium tuberculosis bacteria which generally attack the lungs. According to the WHO, in 2006 around 1.7 million people were killed worldwide because of these bacteria and it affects about 9.2 million people every year.
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