<s>[INST] What is the difference between TB infection and TB disease? [/INST] Someone who is infected with the TB bacilli has the TB germ in their body but for most people their immune system protects them from developing TB disease and becoming sick. They also do not spread the disease to other people. People infected with the TB germ generally have a 5–15% lifetime risk of developing TB disease and becoming ill.

Someone who develops TB disease following infection is sick and at risk of death. If not properly treated, they can also spread the disease to other people. Source: WHO. Link: https://www.emro.who.int/tuberculosis/faqs/index.html. Field: Lung Disease. Disease: Tuberculosis </s>