Table 3.
Bacterial concentrations in various hospital units
| Reference | Hospital unit |
Airborne bacteria concentration CFU/m3 |
||
|---|---|---|---|---|
| Mean | SD | Range | ||
| This study | ICU | 66.4 | 35.2 | 20.4–134.3 |
| Asif et al. (2018) | OT, ES, SW, OPD | 648.3 | NR | 20–3577 |
| Bielawska-Drózd et al. (2018) |
HED Ambulances Offices |
470c 300c 230c |
NR |
130–4200 130–1400 42–5000 |
|
Osman et al. (2018) (Private hospitals sampling) |
ICU ward OT AD |
512 75 1,127 |
425 73 763 |
118–1224 0–228 330–2638 |
| Shaw et al. (2018) | OT | 78 | 46.8 | 22–183 |
| Cabo Verde et al. (2015) | OT, ES, SW | NR | NR | 12–736 |
| Dai et al. (2015) | OT | 301 | NR | 87–585 |
| Mirhoseini et al. (2015) |
OT ward ICU ward SW |
396 222 537 |
NR |
45–1733 NR NR |
| Sudharsanam et al. (2012)a | Hospital ward | NR | NR | 1,120–168,560 |
| Sudharsanam et al. (2012)b | Hospital ward | NR | NR | 3,788–191,111 |
| Pasquarella et al. (2012) | Empty OT | 26.9 | 40 | 0–166 |
| Working OT | 140.14 | 163 | 0–798 | |
aImpingement sampling
bFilter sampling
cMedian reported
SD, standard deviation; ICU, intensive care unit; CFU, colony forming unit; BL, bacterial level; OT, operating theater; ES, emergency services; SW, surgical ward; OPD, out-patient department; HED, hospital emergency department; AD, admission department; NR, not reported