👉 Tubercled is a type of bacterium that infects and attacks the lungs, causing lung disease. It can also affect other organs or tissues in the body, including the brain. Tuberculosis is a serious illness caused by bacteria that attack the lungs and other parts of the body. Symptoms may include coughing up blood, fever, chills, weight loss, and shortness of breath. Treatment typically involves antibiotics to kill the bacteria, but some people may develop secondary infections or complications as