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.
The yellows is a communicable disease, the cause of which is not definitely known. The cleaning of rooms after a communicable disease will be considered later. What is needed at the present moment is a universal conviction that tuberculosis is not an hereditary but a communicable disease. There has long been reason for believing that tuberculosis is a communicable disease. Diphtheria is an acute, specific, infectious, communicable disease.