Volume 10, Number 6—June 2004
Perspective
Airborne Infection with Bacillus anthracis—from Mills to Mail
Kevin P. Fennelly*
, Amy L. Davidow*, Shelly L. Miller†, Nancy Connell*, and Jerrold J. Ellner*
, Amy L. Davidow*, Shelly L. Miller†, Nancy Connell*, and Jerrold J. Ellner*Table
Risk for airborne infection with Bacillus anthracis modeled for various scenarios of exposure to secondarily contaminated mail for 1 hour in a home or office, expressed as number of cases per 10,000 susceptible persons exposeda
| Small room | Moderate-size room | House | ||||||
|---|---|---|---|---|---|---|---|---|
| 0.5 ACH |
0.5 ACH |
2 ACH |
2 ACH |
|||||
| Pulmonary ventilation |
||||||||
| Quanta |
10 L/min |
10 L/min |
6 L/min |
4 L/min |
10 L/min |
6 L/min |
4 L/min |
4 L/min |
| 0.001 |
1.0 |
0.2 |
0.1 |
0.1 |
0.05 |
0.03 |
0.02 |
0.006 |
| 0.01 |
9.8 |
2.0 |
1.2 |
0.8 |
0.5 |
0.3 |
0.2 |
0.1 |
| 0.1 |
97.8 |
19.6 |
11.8 |
7.9 |
4.9 |
3.0 |
2.0 |
0.6 |
| 1 |
936 |
195 |
117 |
78 |
49 |
30 |
20 |
6 |
| 10 |
6,256 |
1,784 |
1,113 |
756 |
479 |
291 |
195 |
61 |
| 100 |
10,000 |
8,599 |
6,928 |
5,443 |
3,881 |
2,555 |
1,784 |
596 |
| 1,000 | 10,000 | 10,000 | 9,999 | 9,996 | 9,926 | 9,477 | 8,598 | 4,588 |
aACH, air changes per hour.
