Question

Is latent tb infectious?

Answer 1

No, latent tuberculosis (TB) is not infectious. In latent TB, the bacteria are present in the body but are inactive and cause no symptoms. People with latent TB do not spread the bacteria to others. However, if the latent infection becomes active, it can become infectious. This is why individuals with latent TB, especially those at higher risk of developing active TB, may be treated to prevent the infection from becoming active.