From: Global numbers of infection and disease burden of soil transmitted helminth infections in 2010
Species | Age class (in years) | Age weight for prevalence | Aggregation parameter ( k) | Morbidity threshold1 | Â | |
---|---|---|---|---|---|---|
Light intensity2 | Medium intensity | High intensity | ||||
Hookworms | 0-5 | 0.75 | f(prevalence)3 | 1 | 2000 | 4000 |
 | 5-10 | 1.2 | f(prevalence)3 | 1 | 2000 | 4000 |
 | 10-15 | 1.2 | f(prevalence)3 | 1 | 2000 | 4000 |
 | 15 plus | 1.0 | f(prevalence)3 | 1 | 2000 | 4000 |
A. lumbricoides | 0-5 | 0.75 | 0.54 | - | 90 | 250 |
 | 5-10 | 1.2 | 0.54 | - | 130 | 375 |
 | 10-15 | 1.2 | 0.54 | - | 180 | 500 |
 | 15 plus | 1.0 | 0.54 | - | 180 | 500 |
T. trichiura | 0-5 | 0.5 | 0.23 | - | 50 | 105 |
 | 5-10 | 0.75 | 0.23 | - | 75 | 160 |
 | 10-15 | 0.9 | 0.23 | - | 100 | 210 |
 | 15 plus | 1.0 | 0.23 | - | 100 | 210 |