Parameter (units) | Definition | Value: A. lumbricoides | Value: S. mansoni |
---|---|---|---|
\( {\mathrm{R}}_0 \) | Basic reproductive number or ratio | 2.12 | 1.55 |
\( \upbeta, \uprho \) | Relative contact rates, relative contribution to the environmental reservoir | 0.22, 1.88, 1, 0.53 | 0.036, 0.17, 1, 0.069 |
\( \upgamma \) | Egg production density dependence parameter | 0.07 | 0.0006 |
\( \mathrm{k} \) | Shape parameter of negative binomial distribution of worms amongst hosts | 0.9 | 0.24 |
\( \upsigma \) (/year) | Inverse of worm lifespan | 1 | 0.1754 |
\( \uplambda \) (epg/female worm) | Net egg output per female worm | 3983 | 0.14 |
reservoir decay rate (/year) | Rate of decay of eggs in the environmental reservoir | 6 | 3 |
drug efficacy | Proportion of a host’s worms removed by a single treatment | 99% (Albendazole) | 86% (Praziquantel) |