Signs, Symptoms And Treatment For Pulmonary Tuberculosis : "Usually, TB is caused by bacteria that spreads to the lungs and infects that area. It can easily be spread from person to person as it is carried in air droplets and when a person sneezes or coughs, the droplets fly out of the mouth and can infect another person. This is the primary version of TB. Most of the time, people will recover from this kind of TB, particularly in the US.
When one is elderly or an infant, or someone with a very weak immune system, such as someone who has AIDS or is on chemotherapy, has diabetes, has a much higher chance of contracting it. And some people have it but it stays dormant for years and does not show up till years later. If you are in contact with people who have it or if you have a poor and unhealthy diet, then you have a higher chance of getting it. Also if you live in a very crowded area, you might also be affected with the disease. And in the entire population at large, if there is a height of HIV infections and an increase of impoverished peoples, then TB will be more likely, as well."
