Tuberculosis (TB) is a preventable and curable disease, yet it still affects millions of people around the world each year. Understanding TB is the first step toward protecting yourself and your loved ones. This health blog will help you learn what TB is, how it spreads, its symptoms, treatment, and how you can stay healthy.
What Is Tuberculosis?
Tuberculosis is an infectious disease caused by a bacterium called Mycobacterium tuberculosis.
It mainly affects the lungs (pulmonary TB), but it can also affect other parts of the body such as the lymph nodes, spine, kidneys, or brain (extrapulmonary TB).
How Does TB Spread?
TB spreads through the air. When a person with active TB of the lungs coughs, sneezes, laughs, or talks, tiny droplets containing TB bacteria are released into the air. People nearby can breathe in these bacteria and become infected.
TB does not spread by:
- Sharing food or drinks
- Touching surfaces
- Shaking hands
- Sharing clothes
Latent TB vs. Active TB
There are two types of TB infection:
1. Latent TB Infection
- You have TB bacteria in your body, but they are inactive.
- You do not feel sick.
- You cannot spread TB to others.
- Without treatment, latent TB can become active TB.
2. Active TB Disease
- The bacteria are active and multiplying.
- You feel sick and may have symptoms.
- You can spread TB to others (if it is in the lungs or throat).
- You need immediate treatment.
Common Symptoms of Active TB
If TB affects the lungs, symptoms may include:
- A cough lasting more than 2–3 weeks
- Chest pain
- Coughing up blood or sputum
- Fever
- Night sweats
- Weight loss
- Fatigue
- Loss of appetite
If you have these symptoms, see a healthcare provider as soon as possible.
How Is TB Diagnosed?
Doctors may use:
- Skin test (Mantoux test)
An induration of 5mm or more is categorized as positive in individuals in the high-risk group. This group includes people who have:
- HIV
- Received organ transplants
- Been immunosuppressed for various reasons
- Recent contact with a tuberculosis (TB) positive person
- Chest x-ray consistent with old healed TB
- End stages of renal (kidney) disease[4]
An induration of 10mm or more is categorized as positive in people in the moderate-risk group. This includes people who:
- Immigrated recently from a country with widespread TB
- Use injection drugs
- Work in healthcare settings, prisons, nursing homes, or other similar areas
- Have clinical conditions that put them at risk (diabetes, leukemia, low body weight)
- Are children under age 4
- Are children and adolescents exposed to high-risk adults
- Blood tests (IGRA tests)
- Chest X-ray
- Sputum test (to check for TB bacteria in mucus from the lungs)
Early diagnosis helps prevent complications and spread to others.
Is TB Curable?
Yes! TB is curable with proper treatment.
TB Treatment:
- Usually involves a combination of antibiotics.
- Treatment lasts at least 6 months.
- You must take the medicines exactly as prescribed, even if you feel better.
Stopping treatment early can cause:
- Drug-resistant TB (harder to treat)
- Treatment failure
- Spread of infection to others
Some patients may receive Directly Observed Therapy (DOT), where a healthcare worker supervises medication intake to ensure proper treatment.
What Is Drug-Resistant TB?
Drug-resistant TB occurs when TB bacteria do not respond to the usual medicines. It develops mainly when:
- Treatment is not completed.
- Medications are taken incorrectly.
- Incorrect drugs or doses are prescribed.
Drug-resistant TB requires longer and more complex treatment.
How Can You Prevent TB?
- Cover your mouth when coughing or sneezing.
- Ensure good ventilation in your home.
- Get tested if you’ve been in close contact with someone who has TB.
- Complete treatment if you are diagnosed.
- In many countries, the BCG vaccine helps protect children from severe TB.
Living with TB: Tips for Patients
If you have active TB:
- Take your medication daily as prescribed +++.
- Attend all follow-up appointments.
- Rest and eat nutritious foods.
- Avoid close contact with others until your doctor says you are no longer contagious.
- Wear a mask if advised by your healthcare provider.
Remember: Most people become non-infectious after a few weeks of proper treatment.
When to Seek Immediate Help
Seek urgent medical care if you experience:
- Severe shortness of breath
- Heavy coughing of blood
- Severe chest pain
- Confusion or severe weakness
Final Message
Tuberculosis is serious, but it is preventable and curable. Early testing, proper treatment, and completing your medication can save lives — including your own.
If you have symptoms or think you may have been exposed to TB, speak to a healthcare provider promptly. With the right care and support, you can fully recover and protect those around you.
Stay informed. Stay healthy.
