Tuberculosis is caused by the bacterium Mycobacterium tuberculosis. It is primarily spread through the air when an infected person coughs, sneezes, or talks, releasing tiny droplets containing the bacteria into the air. Other factors that can increase the risk of developing tuberculosis include:
1. Weakened immune system: People with weakened immune systems, such as those with HIV/AIDS, malnutrition, or certain medical conditions, are more susceptible to developing tuberculosis.
2. Close contact with an infected person: Living or working in close quarters with someone who has active tuberculosis increases the risk of transmission.
3. Poor ventilation: Crowded and poorly ventilated environments can increase the risk of tuberculosis transmission.
4. Substance abuse: Alcohol and drug abuse can weaken the immune system and increase the risk of developing tuberculosis.
5. Travel to or living in areas with high tuberculosis rates: People who travel to or live in regions with high rates of tuberculosis are at increased risk of exposure to the bacteria.
6. Age: Infants, young children, and the elderly are more susceptible to developing tuberculosis due to weaker immune systems.
7. Smoking: Smoking damages the lungs and weakens the immune system, making smokers more susceptible to tuberculosis.