Volume 14, Number 1—January 2008
Research
Cryptosporidiosis and Filtration of Water from Loch Lomond, Scotland
Kevin G.J. Pollock*
, David Young†, Huw V. Smith‡, and Colin N. Ramsay*
, David Young†, Huw V. Smith‡, and Colin N. Ramsay*Table 2
Age distribution of cryptosporidiosis case-patients, Loch Lomond, Scotland
| Water source | Relation to enhanced water filtration* | No. | Mean, y | Median, y | Range, y |
|---|---|---|---|---|---|
| Loch Lomond | Before | 341 | 16.14 | 8.0 | 3–92 |
| After | 171 | 16.43 | 8.0 | 1–72 | |
| Other | Before | 726 | 20.50 | 13.0 | 3–99 |
| After | 1,226 | 20.24 | 13.0 | 0–88 |
*Coagulation and rapid gravity filtration, introduced in November 1999.
