Volume 3, Number 3—September 1997
Synopsis
Using a Mathematical Model to Evaluate the Efficacy of TB Control Measures
Laura Gammaitoni and Maria Clara Nucci
Table 2
Percentage of purified protein derivative conversions predicted to occur during various procedures, by using various environmental control strategies and respiratory protective devices
| Control measuresa | Bronchoscopy q=6, t=150 minb | Abscess irrigation q=38, t=150 min | Autopsy q=90, t=150 min | Intubation q=514, t=66 min |
|---|---|---|---|---|
| GV | 34.3 | 93 | 99.9 | 61.7 |
| GV+HF | 13.6 | 60.5 | 90 | 30.1 |
| GV+UVGI | 5.8 | 31.4 | 60.5 | 13.7 |
| GV+SM | 22.3 | 79.7 | 98.1 | 43.8 |
| GV+HF+SM | 8.4 | 42.7 | 74.8 | 19.3 |
| GV+UVGI+SM | 3.5 | 20.2 | 42.8 | 8.5 |
| GV+DMR | 5.9 | 32 | 61.5 | 13 |
| GV+HF+DMR | 2.1 | 12.6 | 28.3 | 5.1 |
| GV+UVGI+DMR | 0 .9 | 5.3 | 12.6 | 2.1 |
| GV+HM | 1.3 | 7.7 | 17.9 | 2.8 |
| GV+HF+HM | 0.4 | 2.7 | 6.7 | 1.1 |
| GV+UVGI+HM | 0.2 | 1.1 | 2.8 | 0.4 |
aGV=general ventilation; HF=HEPA filtration; SM=surgical masks; DMR=dust/mist respirators; HM=HEPA masks.
bq=quanta; t=time.
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