TABLE 1.
Microorganism-specific model input parameters in QMRAcatch.
| Parameter | Dimension | Details | Distribution type | Microorganism | Value | References |
| Concentrations of feces Cf (mean, 95th percentile) | N/g | Deer sources | Gamma | E. coli | (3, 16) × 107 | Farnleitner et al., 2010 |
| Human MST | (3, 11) × 103 | Farnleitner et al., 2014 | ||||
| Ruminant MST | (2, 6) × 109 | Farnleitner et al., 2014 | ||||
| Pig MST | (3, 20) × 103 | Farnleitner et al., 2014 | ||||
| Duck MST | (7, 52) × 103 | Farnleitner et al., 2014 | ||||
| C. bovis + C. ryanae | 103, 225 | Garcia-Presedo et al., 2013 | ||||
| Giardia duodenalis A-II | 89, 320 | Garcia-Presedo et al., 2013 | ||||
| Pig sources | Gamma | E. coli | (0.04, 2.5) × 108 | Frick et al., 2018 | ||
| Human MST | (7, 33) × 103 | Farnleitner et al., 2014 | ||||
| Ruminant MST | 0, 0 | Farnleitner et al., 2014 | ||||
| Pig MST | (2, 10) × 1010 | Farnleitner et al., 2014 | ||||
| Duck MST | 0, 0 | Farnleitner et al., 2014 | ||||
| Cryptosporidium | 70, 133 | Castro-Hermida et al., 2011 | ||||
| Giardia | 8, 10 | Castro-Hermida et al., 2011 | ||||
| Bird sources | Gamma | E. coli | (0.001, 3.2) × 108 | Frick et al., 2018 | ||
| Human MST | (2, 6) × 103 | Farnleitner et al., 2014 | ||||
| Ruminant MST | (1, 9) × 103 | Farnleitner et al., 2014 | ||||
| Pig MST | (8, 30) × 104 | Farnleitner et al., 2014 | ||||
| Duck MST | (1.3, 4.5) × 107 | Farnleitner et al., 2014 | ||||
| Cryptosporidium parvum | 288, 686 | for Canada migratory geese (Graczyk et al., 1998) | ||||
| Giardia | 405, 786 | for Canada migratory geese (Graczyk et al., 1998) | ||||
| a0, a1 | log10 day, log10 day/ °C | Parameters to describe first order decay in water as function of water temperature | Constant | Human MST marker | 0.78, −0.03 | This study (best fit) |
| Ruminant MST marker | 0.79, −0.037 | This study (best fit) | ||||
| Pig MST marker | 1.7, −0.039 | This study (best fit) | ||||
| Bird MST marker | 1.85, −0.039 | This study (best fit) | ||||
| E. coli | 1.04, −0.017 | Franz et al., 2014 | ||||
| Cryptosporidium | 3.3, −0.076 | Ives et al., 2007 | ||||
| Giardia | 2.16, −0.07 | de Regnier et al., 1989 | ||||
| μf minimum, maximum | 1/d | first order decay in feces in all animal sources based on reported values in bovine feces | Uniform | Ruminant MST marker | −0.13, −0.11 | Oladeinde et al., 2014 |
| E. coli | −0.3, +0.1 | Oladeinde et al., 2014 | ||||
| Cryptosporidium | −0.05, −0.03 | Olson et al., 1999 | ||||
| Giardia | −0.38, −0.11 | Olson et al., 1999 | ||||
| a, β | 1/mm, - | release parameters | All microorganisms | 0.1, 2.0 | Bradford and Schijven, 2002; Guber et al., 2015 | |
| Dose-response model parameters | ||||||
| α, β | - | hypergeometric | Cryptosporidium | 0.3, 1.1 | Schijven et al., 2011, 2015 | |
| r | - | exponential | Giardia | 0.02 | Regli et al., 1991 | |
Decay rate coefficients in fresh water and in feces (Equations 2 and 9), release parameters (Equation 4), and dose-response parameters α and β (Equation 13).