About 80% of people in many Asian and African countries test positive while only 5-10% of people in the United States population tests positive.
Bantfu labalinganiselwa ku-80% emaveni lamanyenti ase Asia nase Afrika batfolakele banalesifo ngalesikhatsi 5-10% webantfu base United States batfolakele banalesifo ngalesikhatsi bahlolwa ngeluhlolo lwe-tuberculin.