National Tuberculosis Day 2026: Know the symptoms of TB and simple ways to prevent the disease

Symptoms of TB: Dramatic weight loss, fatigue, and a general feeling of weakness is one of the most common symptoms oof tuberculosis (Image: Canva)

• TB remains a leading infectious cause of death worldwide
• Early diagnosis and full treatment are crucial to cure TB
• BCG vaccination and screening help prevent TB spread

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Tuberculosis, often associated with shadowed hospital wards and hushed warnings, remains one of the deadliest diseasesall over the world. Declared a global health emergency by the World Health Organization over 30 years ago, TB has persisted, even overtaking COVID-19, as the leading infectious cause of death after three years of the pandemic. Even in 2026, TB continues to challenge society.

What makes TB particularly challenging is its dual nature. It is highly curable when diagnosed early, yet frighteningly persistent and contagious. Spread primarily through tiny droplets in the air, TB mostly affects the lungs but can silently infiltrate other organs.

And while modern medicine has made great development since Robert Koch discovered the Mycobacterium tuberculosis bacterium in 1882, millions continue to fall victim each year.

Also read | Symptoms of drug-resistant TB: Pulmonologist on why early treatment is critical

Common symptoms of tuberculosis

Persistent cough lasting weeks: A cough that refuses to subside, sometimes producing blood-streaked phlegm, is a classic sign of pulmonary TB. Ignoring it can allow the infection to spread to others and worsen internally.

Unexplained weight loss: Patients often experience dramatic weight loss, fatigue, and a general feeling of weakness. This occurs because TB consumes the body’s resources, undermining your health.

Night sweats and fever: Soaking night sweats accompanied by low-grade fever often signal the body’s immune system is struggling to combat TB bacteria. These symptoms are subtle but persistent, unlike common colds.

Chest pain and shortness of breath: As TB damages the lungs, people may notice tightness, laboured breathing, and discomfort in the chest, particularly during physical exertion.

Affects other organs: TB can affect the kidneys, spine, and brain, producing back pain, urinary issues, or neurological symptoms, making medical attention crucial beyond lung complications.

Also read | Causes and symptoms of abdominal TB: It's a slow-burning threat you cannot ignore

How to prevent TB

Vaccination and screening: BCG vaccination for infants and targeted screening in high-risk populations remain vital tools in stopping TB before it takes hold.

Early diagnosis and treatment: Completing the full course of prescribed TB medication is essential; partial treatment fuels drug-resistant TB strains.

Public health measures: Ensuring well-ventilated living spaces, reducing overcrowding, and promoting cough etiquette can help reduce TB transmission.

Education and advocacy: Communities must be informed about TB symptoms, risk factors, and the importance of seeking medical help promptly, which supports larger public health goals.

FAQs on Tuberculosis

1. What is tuberculosis (TB)?

Tuberculosis is a contagious infection caused by Mycobacterium tuberculosis, mainly affecting the lungs but sometimes other organs. It spreads through tiny droplets in the air when an infected person coughs or sneezes.

2. What are common symptoms of TB?

Key symptoms include a persistent cough lasting weeks, blood-streaked phlegm, unexplained weight loss, fatigue, night sweats, low-grade fever, chest pain, and shortness of breath.

3. Can TB affect organs other than the lungs?

Yes. TB can involve the kidneys, spine, and brain, causing back pain, urinary problems, or neurological symptoms. These require urgent medical assessment beyond standard lung-related issues.

4. How can TB be prevented?

Prevention includes BCG vaccination for infants, screening high-risk groups, early diagnosis, completing treatment, good ventilation, avoiding overcrowding, and practising proper cough etiquette.

5. Why is early diagnosis and complete treatment important?

TB is highly curable when detected early. Not completing the full course of TB medicines can lead to drug-resistant TB, making the disease harder to treat and increasing its spread.

Disclaimer: This article, including health and fitness advice, only provides generic information. Don’t treat it as a substitute for qualified medical opinion. Always consult a specialist for specific health diagnosis.