Overview of SARS-CoV-2 RNA in particulate matter 10 and inhalable dust samples collected at a mink farm (NB4) during a more acute phase of SARS-CoV-2 outbreak
| Date | Measurement | Inhalable | Particulate matter 10 | Total suspended particles | |||
| Non-detect(s) | Positive sample(s): virus concentration (RNA copies/m3) | Non-detect(s) | Positive sample(s): virus concentration (RNA copies/m3) | Non-detect(s) | Positive sample(s): virus concentration (RNA copies/m3) | ||
| 13 May 2020 | Multiple-day outdoor: spot A only | None | A: 7.1×102 | A | None | Not collected | Not collected |
| 16 May 2020 | Multiple-day outdoor: spot A only | None | A: 3.6×103 | A | None | Not collected | Not collected |
| 19 May 2020 | 6-hour indoor stationary (sampling spots I, II, III, IV, V, VI) | I, II, V | III: 6.6×103
IV: 9.8×103 VI: 1.9×104 | I, II, III, V | IV: 5.5×103
VI: 2.5×103 | Not collected | Not collected |
| 8-hour indoor personal (person X and person Y) | None | X: 4.5×104
Y: 4.3×104 | None | X: 2.0×104
Y: 3.0×103 | Not collected | Not collected | |
| 21 May 2020 | Multiple-day outdoor: expanded (spot A+ B, C, D) | None | A: 2.6×103 | None | A: 1.1×102 | A, C, D | B: 6.9×102 |
| 25 May 2020 | Multiple-day outdoor: expanded (spot A+ B, C, D) | A, B, C, D | None | A | None | B, D | A: 4.5×102
C: 3.1×102 |
| 28 May 2020 | Multiple-day outdoor: expanded (spot A+ B, C, D) | A, D | None | None | A: 1.2×103 | D | A: 4.8×103
B: 1.7×103 C: 2.7×102 |
I, II, III, IV, V, VI: stationary indoor air sampling spots (see online supplemental figure S1 for a map of the layout of the farm and measurement spots.
A, B, C, D: stationary outdoor air sampling spots (see online supplemental figure S1 for a map of the layout of the farm and measurement spots).
X, personal air sampling of fieldworker X; Y, personal air sampling of fieldworker Y.