TB: What you should know

The risk of getting drug-resistant TB are still very low – in the United States there were only 49 cases from 1993 to 2006. It’s most likely to develop in individuals with TB who do not take their medication properly – or from being exposed to an individual who has the disease. That’s one factor that makes the Speaker case such sensational news – if he did infect others, it will be an unusual event within North America.

Testing
If a person has TB infection, a skin test will often indicate the presence of TB bacteria in the bloodstream. TB disease, however, is most commonly diagnosed through a chest x-ray, or by testing phlegm. A positive skin test does not always indicate TB, however, as some vaccines and other related bacteria in the system will also trigger a positive skin test. It also takes 2 to 12 weeks for the test to become positive after a person has been exposed to the TB bacteria.

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