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. 2000 Nov;38(11):4285–4287. doi: 10.1128/jcm.38.11.4285-4287.2000

TABLE 1.

Policy impact on release from the “airborne precautions” category for 42 patients with culture-positive pulmonary tuberculosisa

Policy No. (%) of patients under AP No. (%) of patients not under APb Increased risk (%) due to policy
Current (≥3 negative smears) 37 (88) 5 (12) NA
Modification 1 (2 negative smears) 37 (88) 5 (12) No change (0)
Modification 2 (1 negative smear) 36 (85) 6 (15) 1 additional patient (3)c
a

AP, airborne precautions; NA, not applicable. 

b

Number of nontreated tuberculosis patients not under airborne precautions who could potentially transmit M. tuberculosis

c

The smear-positive finding from this one patient was read as 1+, i.e., 3 to 9 AFB per slide.