Table 1.
Site characteristics
| System | Site code | Site typea | No. of beds | Protocol for length of incubation of media |
No. (% of total) of specimens cultured | No. (% of total) of positive culture results |
MTBC recovery rate (%)b | MTBC smear sensitivity (%)c | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Broth (days) | Solid (wk) | All mycobacteria | MTBC | |||||||
| MGIT | ||||||||||
| B | PH | 42 | 8 | 2,793 (14.5) | 263 (17.0) | 123 (26.4) | 4.4 | 74.0 | ||
| D | Hosp | 477 | 42 | 6 | 1,143 (5.9) | 103 (6.7) | 51 (10.9) | 4.5 | 33.3 | |
| F | PH | 42 | 6 | 1,777 (9.2) | 91 (5.9) | 35 (7.5) | 2.0 | 60.0 | ||
| H | Hosp | 1,000 | 42 | 6 | 2,762 (14.3) | 146 (9.4) | 19 (4.1) | 0.7 | 31.6 | |
| K | PH | 42 | n/ae | 2,000 (10.4) | 171 (11.1) | 80 (17.2) | 4.0 | 48.8 | ||
| L | PH | 42 | 8 | 1,524 (7.9) | 135 (8.7) | 70 (15.0) | 4.6 | 78.6 | ||
| Total MGIT | 11,999 (62.3) | 909 (58.8) | 378 (81.8) | 3.2 | 60.6 | |||||
| BacT/Alert | ||||||||||
| C | PH | 42 | 6 | 471 (2.4) | 27 (1.7) | 10 (2.1) | 2.1 | 60.0 | ||
| G | Hosp | 1,000 | 42 | 5 | 3,963 (20.6) | 472 (30.5) | 74 (15.9) | 1.9 | 58.0 | |
| M | Hosp | 866 | 42+d | 8 | 2,842 (14.7) | 139 (9.0) | 4 (0.9) | 0.1 | 0.0 | |
| Total BacT/Alert | 7,276 (37.7) | 638 (41.2) | 88 (18.9) | 1.2 | 56.8 | |||||
| Overall total | 19,275 | 1,547 | 466 | 2.4 | 59.9 | |||||
a
PH, public health laboratory; Hosp, hospital-based laboratory.
b
Percent positive for MTBC of specimens cultured.
c
Percent of MTBC final culture results that were AFB smear positive.
d
Held 56 days for blood specimens (up to 62 days under special circumstances).
e
n/a, site does not use solid media.