WHAT IS TUBERCULOSIS
Tuberculosis (TB) is an infectious disease that most often affects the lungs. The WHO estimates that one-third of the world population is infected with TB. While TB is latent in most people who never develop symptoms, the bacteria become active when the immune system is weakened, causing harmful symptoms and likely death. Common symptoms of active TB are coughing with blood, chest pains, weakness, weight loss, fever and night sweats.