From: Sources of airborne microorganisms in the built environment
Source | Source strength | Reference |
---|---|---|
Humans | 3.7 × 107 bacterial genome copies per person-houra | [33] |
7.3 × 106 fungal genome copies per person-houra | ||
31 mg total per person-houra | ||
2.2 × 102 (median) and 2.6 × 105 (max) influenza genome copies (<5 μm) per person-houra | [41] | |
Pets | TBD | N/A |
Plants | TBD | N/A |
Plumbing systems | TBD | N/A |
Heating, ventilation, and air-conditioning (HVAC) systems | TBD | N/A |
Mold | TBD | N/A |
Resuspension of settled dust | TBD from walking | N/A |
4 × 104 (median) and 7.4 × 105 (max) bacterial genome copies per min from vacuum cleaners | [99] | |
Outdoor air | Depends on concentration in outdoor air, ventilation rate, and penetration efficiency | N/A |