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Table 2 Parameter values for cysticercosis model (values are expressed per month). Minimum and maximum values were used for the sensitivity analysis

From: Assessing the impact of intervention strategies against Taenia solium cysticercosis using the EPICYST transmission model

Parameter Value Minimum Maximum Derivation (min, max) Reference
Human population size 10,000
Pig population size 2000
d H 0.0015 0.0013 0.0018 Average human life expectancy of 54 years (46, 64) [56]
d P 0.083 0.042 0.17 Average age at slaughter: 1 year (0.5, 2) [14, 28, 57]
d E a 2 0.083 4 Average period of persistence of eggs in environment: 2 weeks (1 week, 3 months) [5053, 58]
α 0.042 0.017 0.17 Average lifespan of T. solium: 2 years (0.5, 5) [59, 60]
τ a 2.36 × 10-10 0.25τ 4τ b
ϕ 0.8 0.1 0.9 [61]
δ 960,000 640,000 1,800,000 [60, 62]
ε 0.01 0.0075 0.0125 [63]
χ 0.5 0.083 0.68 Assumes 1 pork meal = 200 g; 1.2 kg per capita per annum (0.2 kg, 3.4 kg) = an average 6 pork meals per year [64]
π L a 0.0084 0.25π L 4π L b
r consumption -0.25 -0.66 0 c
r infection 1 0 2 c
θ a 2.45 × 10-11 0.25θ 4θ b
r Cysticercosis 1 0 4 [65]
η 0.0277 0.00167 0.083 Average duration of cysticercosis infection in humans: 3 years (1, 50) [66]
  1. aIndicates that a uniform distribution was specified for the LHS-PRCC, a triangle distribution was used for all other parameters
  2. bParameter values were derived by equilibrium analysis
  3. cWhere evidence in the literature was scarce to motivate parameter values, the values chosen were based upon expert opinion of plausible and conservatively wide ranges and their influence was further explored in the sensitivity analysis