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How does tuberculosis affect the lungs?

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This infectious disease happens when a specific type of bacteria reaches the alveoli (tiny air sacs) in the lungs. Some people who carry this bacteria don't know that they do, but others develop serious symptoms. Either way, the infection can damage your lungs.

Reviewed by Paul Boyce on May 20, 2020

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How does cystic fibrosis affect the lungs?

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