Research Article

The Preventive Control of Zoonotic Visceral Leishmaniasis: Efficacy and Economic Evaluation

Table 1

Parameters adopted in our model. The indexes h, d, and s stand for humans, dogs, and sandflies, respectively.

ParameterMeaningValueDimensionSource

Natural mortality rate3.67 × 10−51/dayBrazilian Institute of Geography and Statistics, Brazil [19]
Kalazar specific lethality6.31 × 10−31/dayWorld Health Organization [20]
Average daily bitten humans rate2.00 × 10−1Human/(sandfly × day)Epidemiological Surveillance Direction, Santa Catarina State, Brazil [21]
Vector density per host (time-dependent)VariableSandfly/humanFitted
Human : house ratio3Human/houseBrazilian Institute of Geography and Statistics, Brazil [22]
Proportion of infective bites1.00 × 10−2DimensionlessMolineaux and Gramiccia [23]
Spontaneous recovery rate5.48 × 10−41/dayBadaro et al. [24]
Loss of immunity rate5.48 × 10−41/dayKault and Marsh [25]
Latent recovery rate1.10 × 10−21/dayBadaro et al. [24]
Inverse of incubation period4.00 × 10−41/dayPearson and Souza [26]
Recovery rate to immunes2.50 × 10−31/dayMinistry of Health, Brazil [17]
Natural mortality rate2.28 × 10−41/day Selman et al. [27]
Kalazar specific lethality1.81 × 10−31/dayLanotte et al. [28]
Average daily bitten dogs rate2.00 × 10−1Dog/(sandfly × day)Epidemiological Surveillance Direction, Santa Catarina State, Brazil [21]
Human : dog ratio for Araçatuba/SP city10/1.8Human/dogAndrade et al. [29]
Vector density per hostSandfly/dog
Inverse of incubation period3.78 × 10−41/dayGreene [30]
Proportion of infective bites1.00 × 10−2DimensionlessMolineaux and Gramiccia [23]
Spontaneous recovery rate2.74 × 10−41/dayLanotte et al. [28]
Loss of immunity rate (recovery to susceptible)2.74 × 10−31/dayKault and Marsh [25]
Recovery rate from clinically ill to immunes9.04 × 10−41/dayLanotte et al. [28]