Table 1.
Location | Laboratory room | Buried and outside | ||||
---|---|---|---|---|---|---|
Brick | Cloth | Tile | Brick | Cloth | Tile | |
Day 1 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Day 7 | ✓ | ✓ | ✓ | ✓ (smear) | ✓ (smear) | ✓ |
Day 15 | ✓ | ✓ | ✓ (smear) | ✓ (smear) | ✓ (smear) | ✓ (smear) |
Day 30 | ✓ (smear) | ✓ (smear) | ✓ (smear) | ✓ (smear/dim) | ✓ (smear) | ✓ (smear) |
Day 45 | ✓ (smear/dim) | ✓ (smear) | ✓ (smear) | — | — | — |