Tuberculosis, also known as TB, is an illness that affects the lungs and is caused by a type of bacteria called Mycobacterium tuberculosis complex. TB can spread when a person with the illness coughs, ...

A tuberculosis skin test can help a doctor determine if you need treatment. A positive test looks different for everyone, depending on your risk factors. Exposure to Mtb can result in either active TB ...

A tuberculosis (TB) skin test is the first method a doctor may use to try to determine if a person has TB. A TB skin test involves injecting a person with a small amount of tuberculin to see how the ...