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Interesting Facts About Tuberculosis

Discover interesting facts about tuberculosis, from its ancient origins to modern treatment breakthroughs. Learn surprising details about how TB spreads, affects people globally, and efforts to eradicate it.

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Written by Dr. Siri Nallapu

Reviewed by Dr. M L Ezhilarasan MBBS

Last updated on 22nd Jul, 2025

Tuberculosis

Interesting Facts About Tuberculosis

Tuberculosis (TB) is a serious infectious disease that primarily affects the lungs but can also impact other parts of the body. While many people have heard of TB, there are several surprising and important facts about this condition that everyone should know. Whether you're a patient, a caregiver, or simply curious, understanding TB can help in early detection, prevention, and proper treatment.

1. TB Is One of the Oldest Known Diseases

Did you know that TB has been around for thousands of years? Evidence of TB has been found in ancient Egyptian mummies, and it was even mentioned in early Greek and Roman medical texts. Despite medical advancements, TB remains a major global health concern today.

2. TB Is Caused by Bacteria, Not a Virus

Unlike the flu or COVID-19, TB is caused by a bacterium called Mycobacterium tuberculosis. This germ spreads through the air when an infected person coughs, sneezes, or talks. However, not everyone exposed to TB bacteria gets sick—some people carry a latent (inactive) form of the infection.

Get Your Symptoms Checked By Top Specialists

Dr. Mijanur Rahaman Mondal, General Practitioner

Dr. Mijanur Rahaman Mondal

General Practitioner

3 Years • MBBS

Kolkata

Dr Utsa Basu Clinic, Kolkata

recommendation

97%

(25+ Patients)

500

Dr. Smitha Nagaraj, General Physician/ Internal Medicine Specialist

Dr. Smitha Nagaraj

General Physician/ Internal Medicine Specialist

15 Years • MBBS, Diploma in Family Medicine

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

Dr. Baijnath Budhiram Yadav, General Physician/ Internal Medicine Specialist

Dr. Baijnath Budhiram Yadav

General Physician/ Internal Medicine Specialist

24 Years • MBBS, MD (General Medicine)

Dombivli

Nulife multispeciality, Dombivli

700

Dr. Arpit Pandey, General Practitioner

Dr. Arpit Pandey

General Practitioner

7 Years • MD (Physician)

Gurugram

MedVain, Gurugram

recommendation

88%

(25+ Patients)

600

3. TB Can Affect More Than Just the Lungs

While pulmonary TB (lung TB) is the most common form, the bacteria can also attack other organs, such as:

  • Lymph nodes (swollen glands)
  • Bones and joints (spinal TB, also called Pott’s disease)
  • Brain and nervous system (TB meningitis)
  • Kidneys and liver
  • Skin

This is called extrapulmonary TB and requires specialised treatment.

4. Not Everyone with TB Shows Symptoms

There are two types of TB infection:

  • Latent TB: The bacteria are present but inactive, meaning no symptoms appear, and the person isn’t contagious. However, it can turn into active TB later.
  • Active TB: The bacteria multiply, causing symptoms like persistent cough, fever, night sweats, and weight loss.

Many people with latent TB never develop active TB, but those with weakened immune systems (like HIV patients) are at higher risk.

5. TB Is Treatable and Curable

The good news is that TB can be cured with the right antibiotics. Treatment usually lasts 6 to 9 months, and it’s crucial to complete the full course to prevent drug-resistant TB. Skipping doses can make the bacteria harder to treat.

6. Drug-Resistant TB Is a Growing Concern

Some TB strains have become resistant to standard antibiotics, leading to MDR-TB (multidrug-resistant TB) and XDR-TB (extensively drug-resistant TB). These forms require longer, more complex treatments with stronger medications.

7. TB Is Still a Leading Cause of Death Worldwide

Despite being preventable and curable, TB remains one of the top 10 causes of death globally, especially in developing countries. The World Health Organisation (WHO) estimates that 1.5 million people die from TB each year.

8. Vaccines Exist, But They Aren’t Perfect

The BCG vaccine helps protect against severe forms of TB in children, but it’s not very effective in adults. Researchers are working on better vaccines to combat TB more effectively.

9. Smoking and Diabetes Increase TB Risk

Certain lifestyle factors make people more vulnerable to TB, including:

  • Smoking (damages the lungs)
  • Diabetes (weakens immunity)
  • Malnutrition (poor diet lowers resistance)
  • HIV/AIDS (severely weakens the immune system)

10. Early Detection Saves Lives

If you have a persistent cough lasting more than 2 weeks, unexplained weight loss, fever, or night sweats, consult a doctor. A simple sputum test or chest X-ray can diagnose TB early.

How to Protect Yourself and Others?

  • Get tested if you have symptoms or have been exposed to TB.
  • Complete your TB treatment if diagnosed—don’t stop early!
  • Cover your mouth when coughing or sneezing.
  • Improve ventilation in living spaces to reduce infection risk.
  • Eat a balanced diet to strengthen your immune system.

Consult a Specialist Today

If you suspect TB or need guidance, Apollo24|7 offers expert consultations and diagnostic tests to help you stay healthy. Early detection and proper treatment can make all the difference.

Would you like to book a consultation or schedule a TB test? Visit Apollo24|7 today for expert care.

Get Your Symptoms Checked By Top Specialists

Dr. Mijanur Rahaman Mondal, General Practitioner

Dr. Mijanur Rahaman Mondal

General Practitioner

3 Years • MBBS

Kolkata

Dr Utsa Basu Clinic, Kolkata

recommendation

97%

(25+ Patients)

500

Dr. Smitha Nagaraj, General Physician/ Internal Medicine Specialist

Dr. Smitha Nagaraj

General Physician/ Internal Medicine Specialist

15 Years • MBBS, Diploma in Family Medicine

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

Dr. Baijnath Budhiram Yadav, General Physician/ Internal Medicine Specialist

Dr. Baijnath Budhiram Yadav

General Physician/ Internal Medicine Specialist

24 Years • MBBS, MD (General Medicine)

Dombivli

Nulife multispeciality, Dombivli

700

Dr. Arpit Pandey, General Practitioner

Dr. Arpit Pandey

General Practitioner

7 Years • MD (Physician)

Gurugram

MedVain, Gurugram

recommendation

88%

(25+ Patients)

600

Get Your Symptoms Checked By Top Specialists

Dr. Mijanur Rahaman Mondal, General Practitioner

Dr. Mijanur Rahaman Mondal

General Practitioner

3 Years • MBBS

Kolkata

Dr Utsa Basu Clinic, Kolkata

recommendation

97%

(25+ Patients)

500

Dr. Smitha Nagaraj, General Physician/ Internal Medicine Specialist

Dr. Smitha Nagaraj

General Physician/ Internal Medicine Specialist

15 Years • MBBS, Diploma in Family Medicine

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

Dr. Baijnath Budhiram Yadav, General Physician/ Internal Medicine Specialist

Dr. Baijnath Budhiram Yadav

General Physician/ Internal Medicine Specialist

24 Years • MBBS, MD (General Medicine)

Dombivli

Nulife multispeciality, Dombivli

700

Dr Puppala Anirudh, General Physician/ Internal Medicine Specialist

Dr Puppala Anirudh

General Physician/ Internal Medicine Specialist

10 Years • MBBS, MD

Nizamabad

Sri Srinivasa hospital, Nizamabad

700

700

No Booking Fees

Dr. Arpit Pandey, General Practitioner

Dr. Arpit Pandey

General Practitioner

7 Years • MD (Physician)

Gurugram

MedVain, Gurugram

recommendation

88%

(25+ Patients)

600

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