Someone with latent TB infection:

A person with latent TB infection cannot infect others because the bacteria are present in the body but are inactive. In this state, an individual has no symptoms and does not feel sick, meaning they are not contagious. Latent TB infection means that while the person carries the bacteria, it is not currently active or multiplying, which is why they do not pose a risk to others.

Additionally, individuals with latent TB may eventually develop active TB if their immune system becomes weakened, but in this asymptomatic stage, they do not spread the disease. This distinction is crucial for understanding the difference between latent TB and active TB, where the latter does cause symptoms and can be transmitted to others.