Although over two billion people — approximately a third of the world’s population — carry TB bacteria, when first infected these people have only a 10 - percent lifetime chance of actually contracting the disease.
Ehkki üle kahe miljardi inimese — umbkaudu kolmandik maailma rahvastikust — kannab endas tuberkuloosipisikuid, on vaid kümnel protsendil esmanakatunuist oht oma eluajal otseselt tuberkuloosi haigestuda.