How is TB (tuberculosis) spread?
TB is spread through the air from one person to another. The bacteria are put into the air when a person with TB disease of the lungs or throat coughs or sneezes. Laughing, singing, or playing brass or woodwind instruments can also spread the germs in an enclosed space. People nearby may breathe in these bacteria and become infected.
TB in the lungs or throat can be infectious. This means that the bacteria can be spread to other people.
People with TB disease are most likely to spread it to people they spend time with every day. This includes family members, friends, and coworkers.
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