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Table 5 Demographic and biological parameters for SWB systems

From: Refined stratified-worm-burden models that incorporate specific biological features of human and snail hosts provide better estimates of Schistosoma diagnosis, transmission, and control

Parameters Name Value
Host turnover rates:   
 Child μ C  = τ + δ C (maturation + mortality) 0.05 + 0.003/year
 Adult μ A (mortality) 0.02 – 0.03/year
Demographic sources:   
 Child S C = {b c , 0, 0, …}; per capita birth rate b C  = 0.032/year [37]
 Adult S A = τ{h 0 C , h 1 C , …}  
Mean daily urine release [34]:   
 Child   U C  = 1100 ml
 Adult   U A  = 1300 ml
Worm turnover rate:   
 Worm mortality γ 0.2/year [50]
Snail parameters:   
 Snail mortality v S 2.6/ year
 Recovery/conversion rate r \( \frac{1}{4} \) weeks
 Patency conversion fraction c 0.05–0.20
 Rate of sporocyst establishment Λ0 \( \frac{1}{2} \) weeks