Table 1. Results of 1,364 environmental specimens submitted to the Illinois Department of Public Health Division of Laboratories (Chicago laboratory) for Bacillus anthracis testing, October–December 2001.
| Organism | Powder (%) | Nonpowder (%) |
|---|---|---|
| Total |
573 (42.0) |
791 (58.0) |
|
B. cereus
|
110 (19.2) |
63 (8.0) |
|
B. subtilis
|
29 (5.1) |
32 (4.0) |
| Other Bacillus species (hemolytic, positive motility) |
21 (3.7) |
40 |
|
B. mycoides
|
16 (2.8) |
6 |
|
B. circulans
|
10 (1.7) |
4 |
|
B. pumilus
|
2 (0.3) |
5 |
|
B. brevis
|
1 (0.2) |
1 |
|
B. laterosporus
|
0 |
1 |
|
B. megaterium
|
0 |
1 |
|
B. polymyxa
|
0 |
1 |
|
B. anthracis
|
0 |
0 |
|
Staphylococcus species (nonhemolytic) |
137 (23.9) |
180 |
|
Staphylococcus aureus
|
3 (0.5) |
5 |
| Other mixed gram-positive organisms |
48 (8.3) |
68 |
| Gram-negative bacilli |
80 (14.0) |
72 |
|
Enterobacter agglomerans
|
1 (0.2) |
0 |
|
Moraxella catarrhalis
|
1 (0.2) |
0 |
| Mixed other gram-positive organisms and mold |
8 (1.4) |
11 |
| Mold |
19 (3.3) |
32 |
| No growth | 87 (15.2) | 269 |