10/02/2026
Tuberculosis (TB) spreads through the air when a person with active TB disease in their lungs coughs, speaks, or sneezes. It does NOT spread through casual contact like handshakes, sharing food, touching surfaces or being outdoors near someone. Understanding how TB is spread can really help reduce fear and misinformation in our communities.
Someone who has Latent TB Infection (LTBI) is not able to spread the disease to others; they only have some TB germs in their body that are sleeping and not making them sick or contagious. A person is only able to spread TB when they have active TB disease in their lungs and have not been on TB treatment.
If someone has spent time around a person who has active TB disease in the lungs, or if they've been contacted by public health about a possible exposure, getting tested is an important step. Testing helps identify TB early so people can get connected with care and protect their friends and family around them.