Kufambira mberi kubva kuhutachiona hweTB kuenda kuchirwere cheTB pachena kunoitika apo mabhasiri anokunda masoja ekudzivirira muviri uye anotanga kuwanda. Muchirwere cheTB chepakutanga (inenge 1<unk>5% yematambudziko), izvi zvinoitika nekukurumidza mushure mekutapukirwa kwekutanga. Zvisinei, muzviitiko zvakawanda, hutachiona husingaoneki hunoitika pasina zviratidzo zviri pachena. Aya mabhasiri akarara anogadzira chirwere cheTB chinoshanda mu5<unk>10% yezviitiko izvi zvisingaoneki, kazhinji makore mazhinji mushure mekutapukirwa. Njodzi yekushandazve inowedzera ne immunosuppression, yakadai seyakakonzerwa nehutachiona hweHIV. Muvanhu vane hutachiona hweM. tuberculosis neHIV, njodzi yekushandazve inowedzera kusvika ku10% pagore. Zvidzidzo zvinoshandisa DNA fingerprinting yeM. tuberculosis strains zvakaratidza kuti hutachiona hunodzokororwa hunobatsira zvakanyanya kuTB inodzokororwa kupfuura zvaifungidzirwa kare, nekufungidzira kuti inogona kuve ne50% yezviitiko zveTB.
chirwere cheTB chakajeka