Share +. Text A A A. Rheumatoid arthritis (RA) is an autoimmune disease where the body's immune system attacks normal joint tissues, causing inflammation of the joint lining. This inflammation of the joint lining (called the synovium) can cause pain, stiffness, swelling, warmth, and redness.ext A A A. Rheumatoid arthritis (RA) is an autoimmune disease where the body's immune system attacks normal joint tissues, causing inflammation of the joint lining.
Tuberculosis. Tuberculosis (TB) is an infectious disease caused by a bacterium that usually attacks the lungs. TB is spread through the air from one person to another. The bacteria are put into the air when a person with active TB disease of the lungs or throat coughs, sneezes, speaks, or sings.
Tuberculosis (or TB) is a contagious infection caused by Mycobacterium tuberculosis. Most often it infects the lungs, but it can also attack other parts of the body, such as the spine, kidneys and brain. Tuberculosis has two stages, TB infection and TB disease: Someone infected with TB who doesn't have TB disease can't spread the bacteria to others, but should be treated to prevent the development of the disease. The BCG vaccine is effective in protecting children against serious TB disease, but studies show that it provides protection for up to 15 years.