
Tuberculosis: Causes and How It Spreads | Tuberculosis (TB) | CDC
Jan 17, 2025 · Tuberculosis (TB) is caused by a bacterium (or germ) called Mycobacterium tuberculosis. When a person breathes in TB germs, the germs can settle in the lungs and …
Tuberculosis - Symptoms & causes - Mayo Clinic
Apr 24, 2025 · The germs that cause tuberculosis are a type of bacteria. Tuberculosis can spread when a person with the illness coughs, sneezes or sings. This can put tiny droplets with the …
Tuberculosis: Causes, Symptoms, Treatment & Prevention
Tuberculosis (TB) is an illness caused by a bacterial infection. It commonly affects your lungs, but it can also affect other areas of your body like your spine, brain or kidneys.
Tuberculosis - Wikipedia
Chronic cough, fever, cough with bloody mucus, weight loss. Latent TB infection is asymptomatic [1]
Understanding Tuberculosis: Causes, Symptoms, and Treatment Options - WebMD
Aug 15, 2025 · Tuberculosis Causes Tuberculosis bacteria spread through the air, just like a cold or the flu. You can get TB only if you come into contact with people who have it.
Tuberculosis - World Health Organization (WHO)
Nov 13, 2025 · Tuberculosis (TB) is an infectious disease caused by bacteria that most often affects the lungs. It spreads through the air when people with TB cough, sneeze or spit. …
Tuberculosis: Causes, Symptoms, Diagnosis, and Treatment
Sep 9, 2025 · Tuberculosis is an infectious disease caused by a bacterium called Mycobacterium tuberculosis. This microorganism primarily affects the lungs but can also spread to almost any …
Tuberculosis (TB) | Definition, Cause, Symptoms, & Treatment
Dec 9, 2025 · From the blood the bacilli create new tissue infections elsewhere in the body, most commonly in the upper portion of one or both lungs. This causes a condition known as …
Tuberculosis (TB) | Infectious Diseases - UC Davis Health
Whether or not you become sick depends on many factors, such as the amount of exposure you have to TB and the strength of your immune system. Only active TB causes symptoms. You …
Tuberculosis TB - Johns Hopkins Medicine
What causes TB? The main TB bacterium is Mycobacterium tuberculosis (M. tuberculosis). Many people infected with this bacterium never develop active TB. They remain in the latent …