Table 2.

The notations, parameters, and variables of the proposed mathematical model for prioritizing approach.

Notations		Definition
$n=1,\dots ,N$	:	Set of suspected cases
$m=1,\dots ,M$	:	Set of CMCs
$k=1,\dots ,K$	:	Set of ambulances
$u=1,\dots ,N$	:	Set of priority
$i,j=1,\dots ,N+M$	:	Set of all locations
Parameters
$T{T}_{i,j}$	:	Travel time between location i and j
$T{V}_i$	:	Visitation time of suspected case i
$T{S}_j$	:	Sanitizing time of each ambulance in CMC j
$PT$	:	The penalty time
$C{M}_m$	:	The capacity of CMC m
$C{K}_k$	:	The capacity of ambulance k
${\alpha }_i$	:	The decision parameter concerning the severity condition of suspected case i after visitation
${\beta }_i$	:	The severity of suspected case i after PE
$BM$	:	A large number
Variables
$X_{i,j,k}$	:	1, if the ambulance k travels between location i and j; otherwise 0
$A_{i,k,u}$	:	1, if the ambulance k visits suspected case i with priority u; otherwise 0
$S_{k,u}$	:	Starting time of visitation suspected case with priority u by ambulance k
${\epsilon }_{k,u}$	:	Penalty time of visitation suspected case with priority u by ambulance k