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Yes, TB is very contagious. It is easily spread through airborne bacteria, from someone who has TB sneezing, coughing and even their saliva.
Yes, very.
Tuberculosis is very contagious through saliva, coughing, and sneezing. Active TB cases are still kept isolated from non-infected people so the infection can be contained. Once the active phase has passed, a person with TB can still shed tuberculosis germs. This is one reason that all health care workers are tested yearly for TB.

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