In the secondary disease dormant bacteria multiply and destroy tissue in the lungs. They also may spread to the rest of the body so through the bloodstream. At this secondary stage, carries of the TB can infect others. Symptoms of TB include coughing, chest pain, shortness of breath, loss of appetite, weight loss, fever, chills, and fatigue. Children and people with weakened immune systems can really easy get TB. “General preventive measures can be taken to reduce the spread of TB in public places. Ventilation systems lessen the chance of infection by dispersing the bacteria. Ultraviolet lighting also reduces, but does not eliminate, the threat of infection by killing

TB bacteria in confined spaces. Vaccines, such as the Bacillus Calmette Guerin vaccine (BCG), prepared from attenuated bacteria, are another preventive measure. The BCG vaccine is most effective in preventing childhood cases of TB.
With the advent of effective antibiotics for TB, drug therapy has become the cornerstone of treatment. However, the development of bacterial resistance to drugs is a real problem with single-drug treatment. Therefore, all recommended therapies include multiple effective drugs given for at least 6 months, often for as long as 9 to 12 months. Adjustments to the treatments are made based on susceptibility of the bacterial strain. A combination of antibiotics, including isoniazid, rifampin, streptomycin, pyrazinamide, and ethambutol, is usually prescribed.”

Tuberculosis
“Lung tissue calcification, resulting from pulmonary tuberculosis, appears as yellow patches within the chest area of this human X-ray. When airborne phlegm contaminated with the bacillus Mycobacterium tuberculosis is inhaled, nodular lesions, called tubercles, may form in the lungs and spread through the nearest lymph node.”.