Table 4.

Model parameters and initial conditions found through model fitting.

symbol	definition	value
βi	person–person transmission rate	1.034177 × 10−13
βb	environmental–person transmission rate	3.380743 × 10−07
βf	fly–person transmission rate	1.028844 × 10−11
μb	fly birth rate	2.154924 × 10−03
μd	fly death rate	1.67 × 10−03
βe	environment–fly transmission rate	5.095899 × 10−11
Ζ	environmental parameter	2.237077 × 10−02
Sh0	initial human susceptible population	8 × 10+06
B0	initial environmental load	2.5 × 10−02
Rh0	initial human recovered population	4.57 × 10+06
Sf0	initial fly susceptible population	4.91 × 10+03
w	number of flies survive winter	4.91 × 10+03