Umsebenzi upapashwe kwijenali yaseMelika yejenali yoluntu. Kule nkulungwane idlulileyo kunye namawaka eminyaka, abantu abafumananga kungekuphela nje utshintsho lwemozulu, kodwa nazo zonke iintlobo zeebhajethi, kubandakanya isifo sephepha, isibetho kunye nesibetho somkhuhlane weSpanit, isibetho kunye nesibetho somkhuhlane weSpanit. Kwangelo xesha, isifo sephepha esibangelwa yi-Mycobacterium Tuberculosississis isifo sephepha sihlala sisezona zinto zibangela ukusweleka kwendalo kwihlabathi liphela (ngokwe-1,5 yezigidi zabantu bafa kuyo).
Olu losuleleko lujongwa njengenye yezona zinto zibulalayo kwimbali - kwiminyaka engamawaka amabini edlulileyo kunezigidi enye zabantu bafe. Nangona kunjalo, indalo kunye nesantya sokuvezwa kwezinto ezinamathephu kuzo sihlala singaziwa. Izazinzulu ezivela kwiZiko le-Pasteur kunye neDyunivesithi yaseParis (iFrance) zihlalutywe idatha yemfuza ye-genetics ukuze iqonde ukuba indlela yokhetho lwendalo luyichaphazela njani indlela yokhetho lwendalo.
Izifundo zamva nje zibonakalise ukuba inguqulelo ye-tek2 gene, ebizwa ngokuba yi-P1104A, inxulunyaniswa nomngcipheko owandayo wesi sifo emva kosulelo nge-koch wand. Sebenzisa iseti enkulu yedatha evela ngaphezulu kwewaka le-European Genomes yendoda yakudala, izazinzulu zafumanisa ukuba okokuqala kwe-P1104A okokuqala bavela ngaphezulu kweminyaka engama-30 eyadlulayo kwaye benzekile kookhokho ngokubanzi babemi baseNtshona yentshona.
Uhlazo oluqhubekayo lubonise ukuba i-frequency yolu khetho ihla kwehle kakhulu malunga namawaka amabini eminyaka eyadlulayo. Lixesha nje xa iindlela zangoku ze-Mycobacterium ze-Mycobacteloium ziqala ukonakala. Ababhali besifundo bafumanisa ukuba kubudala bobhedu, i-P1104a eyahlukileyo yegesi yayiqhelekile kunenamhlanje. Kwaye kusenokwenzeka ukuba kungenxa yengozi eyandayo yesifo sephepha kubantu belo xesha.
Emva kokufuduka okukhulu kwamafama ase-Anaolic yase-Analithic kunye ne-Eurasian Sterpers ukuya eYurophu kule minyaka ilishumi idlulileyo, i-P1104i Rist iguquka kakhulu. Kodwa malunga neminyaka engamawaka amabini eyadlulayo, ukukhetha okungekho mthethweni kwaqala, nto leyo enciphisa ukwanda kolu hlobo malunga neepesenti ezingama-20, elinokubizwa ngeyona mpembelelo ibalaseleyo yolu hlobo kwi-genome yomntu.
Umthombo: Inzululwazi yezeSwaziya