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Proportion of positive cultures of L. interrogans Copenhageni from spring water and Brazilian soil microcosms obtained after 12 daysa
| Microcosm | Condition | No. of positive samples/total no. of samples tested at: |
||
|---|---|---|---|---|
| 16 days | 21 days | 28 days | ||
| Spring water | Sterile | 3/3 | 3/3 | 2/3 |
| Nonsterile | 3/3 | 3/3 | 2/3 | |
| Brazilian soil | Sterile | 2/3 | 1/3 | 0/3 |
| Nonsterile | 2/3 | 0/3 | 0/3 | |
All culture attempts before day 16 were successful.
