Caused by the bacterium Mycobacterium tuberculosis, the disease kills more people globally than any other infection. It poses the highest risk in children under three years old. TB not only affects the lungs, the targeted site of the most common form of this disease, it can also spread to the bloodstream, and even to the spinal cord and the brain (TB meningitis). According to the Department of Health, TB meningitis is the leading cause of child deaths.
The National Network for Immunization Information in the United States says that studies of the vaccine BCG yield various rates of effectiveness, including 50 percent. It is highest in those who are immunized during early childhood. A vaccinated individual can still catch the disease. However, BCG provides 80 percent protection against the life-threatening military TB and TB meningitis.
The National Network for Immunization Information in the United States says that studies of the vaccine BCG yield various rates of effectiveness, including 50 percent. It is highest in those who are immunized during early childhood. A vaccinated individual can still catch the disease. However, BCG provides 80 percent protection against the life-threatening military TB and TB meningitis.
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