The Mode Of Transmission And Development Of Pulmonary Tuberculosis
Sources of TB Infection:
Risk Factors for TB Transmission:
Entry of M. tuberculosis in Lungs:
Immune System Response:
Formation of Granulomas:
Active TB Disease:
Latent TB Infection:
Reactivation of TB Infection:
- When a person with TB does any of these activities, they release droplets containing the bacteria that can remain suspended in the air for several hours.
- Inhalation of these airborne droplets containing M. tuberculosis bacteria is the most common mode of transmission of pulmonary TB.
- The bacteria can enter the lungs and infect the individual if they are near the infected person.
- The body’s immune system tries to fight the infection, but in some cases, the bacteria can continue to multiply and cause disease.
- If the bacteria become active again, the individual can develop active TB disease.
- This can happen if the immune system becomes weakened due to factors such as stress, malnutrition, or immunosuppression.
- People with HIV are particularly vulnerable to developing active TB disease. The Mode Of Transmission And Development Of Pulmonary Tuberculosis