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CDC_Tuberculosis_(TB)_Transmission_and_Pathogenesis_Video.webm (WebM audio/video file, VP8/Vorbis, length 1 min 42 s, 640 × 360 pixels, 1.27 Mbps overall) This is a file from the Wikimedia Commons .
Tuberculosis (or TB) is an infectious disease, usually caused by Mycobacterium tuberculosis bacteria. [1] TB generally affects the lungs , but can also affect other parts of the body. [ 1 ]
Roughly one-quarter of the world's population has been infected with M. tuberculosis, [6] with new infections occurring in about 1% of the population each year. [11] However, most infections with M. tuberculosis do not cause disease, [169] and 90–95% of infections remain asymptomatic. [87] In 2012, an estimated 8.6 million chronic cases were ...
The U.N. health agency said more than 10 million people worldwide were sickened by tuberculosis in 2021, a 4.5% rise from the year before. WHO said about 450,000 cases involved people infected ...
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