healthcare workers
How Often Do You Need a TB Test?
Tuberculosis is a highly transmissible disease that affects the lungs. Certain employers require routine TB screening and testing for their employees. Learn more about how often to test for TB here.
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BCG Vaccine Impact on TB Testing
Tuberculosis has been stalking humankind for hundreds of years, and has been quite deadly until very recently. A vaccine developed in the early part of the last century, known as the BCG vaccine, is still given to people in many countries. In the USA, where PPD testing is a common diagnostic tool to determine if someone has active TB, a history of BCG vaccination may complicate matters.
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