Table 1

Numbers of acid fast bacilli detected in untreated samples

Auramine (93%)
(n=78)0<11–910–90>90
65 positive results by any method from 70 positives in all; detection rates noted in parenthesis.
0 13 14
<1 12 152
ZN (73%)1–9 1 15
10–90 3 3
>90