World Tuberculosis (TB) Day is observed annually on March 24th to raise awareness about the health and socio-economic impact of tuberculosis and to make strategies to fight against it. It marks the discovery of the TB-causing bacterium (Mycobacterium tuberculosis) by Dr. Robert Koch in 1882. 

What is Tuberculosis?

Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis, which primarily affects the lungs but can also spread to other organs like the brain, spine, and kidneys.

Global Burden of TB

TB is one of the world's deadliest infectious diseases, killing over 1.3 million people annually. The rise of multidrug-resistant TB poses a serious threat to TB control efforts. The disease mainly affects low- and middle-income countries, particularly in Asia and Africa.

How Does it Spread?

TB is transmitted through the air when an infected person coughs, sneezes, or speaks. People inhale these droplets, leading to infection. It spreads easily in crowded, poorly ventilated spaces. TB is not spread by touch, food, or sharing personal items.

Types of TB

  • Latent TB: The bacteria remain inactive in the body without causing symptoms. 
  • Active TB: The infection becomes symptomatic and can spread to others. Without treatment, it can be fatal.

Symptoms of TB

Active TB symptoms include a persistent cough (over 2 weeks), coughing up blood, chest pain, fever, night sweats, and unexplained weight loss. People may feel tired, weak, and lose appetite. If TB spreads beyond the lungs, it can cause swollen glands, back pain, or breathing difficulties.

How is TB Diagnosed?

TB is diagnosed using tests like the sputum test, chest X-ray, and tuberculin skin test. The GeneXpert test detects TB bacteria and drug resistance. Blood tests help diagnose latent TB. For extrapulmonary TB, CT scans, biopsies, or MRI may be needed. Early diagnosis ensures better treatment.

Treatment

TB is treated with antibiotics for 6 months. The first 2 months include four medicines, followed by two medicines for 4 more months. It’s important to complete the full treatment to prevent drug resistance. Severe TB needs longer treatment. Regular check-ups help ensure recovery and stop TB from spreading.

Conclusion

World TB Day reminds us that tuberculosis is preventable, treatable, and curable, yet it remains a global health threat. Raising awareness, improving healthcare access, and ensuring early diagnosis and treatment are crucial to ending TB. Together, through education, research, and action, we can move closer to a TB-free world.

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