Skip to main content

Theory and Modern Applications

Table 2 Description of model parameters and units for SIWDR model (2.1)

From: Modeling the health impact of water and sanitation service deficits on waterborne disease transmission

Parameters

Descriptions

Units

\(b_{I}\)

person–person contact rate

km2 individuals−1 month−1

\(b_{W}\)

reservoir–person contact rate

ml3 cells−1 month−1

\(b_{D}\)

dumpsite–person contact rate

kg cells−1 month−1

\(\gamma ^{-1}\)

infectious period

months

\(\xi _{W}^{-1}\)

pathogen lifetime in water reservoir

months

\(\xi _{D}^{-1}\)

pathogen lifetime in dumpsite

months

\(\alpha _{1}\)

person–reservoir contact rate “shedding”

cells ml−3 month−1 km2 individuals−1

\(\alpha _{2}\)

person–dumpsite contact rate

cells kg−1 month−1 km2 individuals−1

ψ

dumpsite–reservoir contact rate

kg ml−3 month−1

μ

birth rate

month−1

μ

non-disease-related death rate

month−1

\(r_{1}\)

service coverage of DWS

\(r_{2}\)

service coverage of WST

\(r_{3}\)

service coverage of MSW