Table 2.
Per person emission rates of human microflora for indoor occupied conditions in a university classrooma
| Skin/hair/nostrils microflora | Oral cavity microflora | |||
|---|---|---|---|---|
| Particle aerodynamic diameter | E (106 genomes/h/person) | Percent of total bacterial emissions (%) | E (106 genomes/h/person) | Percent of total bacterial emissions (%) |
| 0.4–1.1 μm | 0.06 | 13 | ND | ND |
| 1.1–2.1 μm | 0.14 | 7.3 | 0.03 | 1.8 |
| 2.1–3.3 μmb | – | – | – | – |
| 3.3–4.7 μm | 2.7 | 18 | ND | ND |
| 4.7–9 μm | 2.0 | 15 | 0.5 | 4 |
| >9 μm | 0.53 | 32 | ND | ND |
| Total | 5.4 | 17 | 0.53 | 0.96 |
a
Human skin microflora is comprised of the taxa Propionibacterineae, Staphylococcus, Enterobacteriaceae, and Corynebacterineae, while oral cavity microflora consists of Pasteurellaceae, Fusobacterium, and Veillionella spp. ND, not detected.
b
PCR prior to sequencing failed on the particle size stage 2.1–3.3 μm.