Tuberculosis (TB) : Exam point of view in detail
Tuberculosis (TB) : Exam point of view in detail 1. Definition Tuberculosis (TB) is a chronic infectious disease caused by Mycobacterium tuberculosis. It mainly affects the lungs (Pulmonary TB) but can also affect other organs (Extrapulmonary TB). T B is the world's second most common cause of death from infectious disease after HIV /AIDS 2. Causative Agent Organism: Mycobacterium tuberculosis Type: Acid-fast bacillus (AFB) Characteristics Rod-shaped bacterium Slow growing Resistant due to waxy cell wall Can remain dormant in body 3. Risk Factors Important factors increasing TB risk: HIV infection Diabetes mellitus Malnutrition Low body weight Silicosis End stage kidney disease Cancer and chemotherapy Leukemia Genetic susceptibility Immunosuppressive drugs Overcrowding Poor ventilation 4. Mode of Transmission Tuberculosis spreads mainly through the airborne route. When a person with active pulmonary TB coughs, sneezes, laughs, or talks, tiny droplets containing TB bacter...