TABLE 7.
Annualized risk estimates for bacteria and protozoa
| Site and scenario | Risk estimate (90% prediction interval)
|
|||
|---|---|---|---|---|
| Bacteria
|
Protozoa
|
|||
| Fecal Streptococcus | Enterococcus | Giardiaa | Cryptosporidium | |
| Nairn | ||||
| Recreator | 0.53 (0.18-0.85) | 0.42 (0.12-0.75) | 0.29 (0.05-0.69) | NDb |
| Visitor | 0.1 (0.04-0.19) | 0.07 (0.02-0.14) | 0.03 (0-0.08) | ND |
| Homeless | 0.72 (0.32-0.97) | 0.62 (0.24-0.92) | 0.56 (0.12-0.97) | ND |
| Jackson Street | ||||
| Recreator | 0.53 (0.18-0.85) | 0.45 (0.13-0.77) | 0.14 (0-0.42) | 0.32 (0-0.95) |
| Visitor | 0.1 (0.04-0.19) | 0.07 (0.02-0.15) | 0.01 (0-0.04) | 0.05 (0-0.19) |
| Homeless | 0.72 (0.32-0.97) | 0.64 (0.25-0.93) | 0.3 (0-0.79) | 0.51 (0-1.0) |
| Saybrook Place | ||||
| Recreator | 0.51 (0.17-0.84) | 0.43 (0.13-0.76) | 0.64 (0.19-0.98) | ND |
| Visitor | 0.09 (0.03-0.18) | 0.07 (0.02-0.14) | 0.1 (0.02-0.23) | ND |
| Homeless | 0.7 (0.3-0.96) | 0.63 (0.24-0.93) | 0.87 (0.44-1.0) | ND |
| Basking Ridge | ||||
| Recreator | 0.49 (0.1-0.86) | 0.42 (0.12-0.74) | ND | ND |
| Visitor | 0.06 (0.008-0.14) | 0.07 (0.02-0.13) | ND | ND |
| Homeless | 0.66 (0.21-0.97) | 0.62 (0.24-0.92) | ND | ND |
a
Due to relatively small sample size, it was not possible to fully characterize the distribution of Giardia data. Expected values are based on best estimate assuming Poisson distribution.
b
ND, not detected.