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AFB-MICROSCOPY: SPECIFICITY. Over 99% for AFB. SPECIFICITY OF AFB SMEARS FOR TB . REFERENCE / COUNTRY HIV AFB PATHOGENS, NOT TBLong, Haiti, 1991 26%4/199 patients(2/2 HIV /-)Githui, Kenya, 199233%0/320 patientsWarndorff, Malawi, 1997 >50%?2/904 patients(1/1 HIV /-)Van Deun, Bangladesh, 2001 <1%3/1065 patients.
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