Does the BCG vaccine prevent TB?

Yes, the BCG vaccine is effective in preventing tuberculosis. BCG stands for Bacillus Calmette-Guérin, and the vaccine is made from a weakened strain of the bacterium that causes tuberculosis. Vaccination with BCG is recommended for individuals at high risk of exposure to TB, such as those living in areas where the disease is prevalent or those with weakened immune systems. The vaccine is typically administered in infancy and provides long-lasting protection against developing TB, especially severe forms of the disease. However, it's important to note that while the BCG vaccine is effective, it does not provide complete immunity, and individuals who have been vaccinated may still get infected with TB if heavily exposed to the bacteria. Regular screening and monitoring are still recommended for those vaccinated to ensure early detection and treatment if infection occurs.