Add Yahoo as a preferred source to see more of our stories on Google. Tuberculosis, or TB, is a disease that infects nearly 11 million people worldwide, killing some 1.25 million of them every year, ...

A few weeks ago, we wrote about a positive test for latent tuberculosis and treating that infection with antibiotics. On the heels of that column, we received some follow-up questions from readers.

DEAR MAYO CLINIC: My daughter’s doctor said her PPD was positive and sent her for a chest X-ray to rule out TB. Is it possible to have a false-positive result? Her pediatrician says she should follow ...

Treating all household contacts of someone with tuberculosis (TB) helped prevent active TB disease across age groups in the real world, but the effectiveness was highest when treating individuals who ...