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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 C0 , h C1 , …}

 

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