How tuberculosis hides in the body.

How tuberculosis hides in the body.The tuberculosis vaccine only works for children. BCG (bacille Calmette-Guerin) doesn't protect you as an adult. Now we know more about how the bacterium avoids being detected. Tuberculosis bacteria hide in the very cells that would normally kill them. Now we know more about how they evade recognition. Tuberculosis affects millions of people worldwide. Treatment for it is often prolonged, from six months to two years. We thus have a lot to gain -- and save -- by finding better treatment methods. Improving our understanding about how the bacterium works is key to achieving this. Tuberculosis.