The vaccine to prevent tuberculosis is called BCG vaccine, and BCG vaccination is good for preventing tuberculous meningitis and cornual tuberculosis, which often occur in children. After BCG vaccination of newborns, care still needs to be taken to isolate them from TB patients. Tuberculosis can be contracted by others who inhale microdroplets of Mycobacterium tuberculosis when coughing, sneezing, talking, laughing, or singing, through a tuberculosis patient with blood in the sputum who spreads microdroplets of Mycobacterium tuberculosis in the air, so contact with tuberculosis patients should be kept at a certain distance and wearing a mask is an effective measure to prevent infection. Patients with tuberculosis should also cover their mouths and noses when coughing or sneezing, and should not spit anywhere to avoid spreading the bacteria to others.