Table 2.

Notations of compartments and the initial conditions by region for the main analysis.

Initial values	Note	Makkah	Madianh	Eastern	Riyadh	Source
S	S = N - E - P - A - I - H - R	6962521	2987366	4997867	6495550	Calculated
E	$E(0)=\frac{1}{{\gamma }_0}{E}_I(0)$, $E_I(0)$ represented the number of documented cases with symptoms starting on the day ($D_p$+1) and day($D_p+D_e$)	33417	7935	1328	2781	Calculated
P	$P(0)=\frac{1}{{\gamma }_0}{P}_I(0)$, $P_I(0)$represented the number of documented cases with symptoms starting on day 1 (13th March) and day ($D_p$)	3148	4304	694	1413	Calculated
I	I(0) was the number of documented cases with onset within $D_i$ days before day 1 (13th March)	205	95	51	70	MOH of KSA
A	$A(0)=\frac{1}{{\gamma }_0}(1-{\gamma }_0)I(0)$	686	281	30	176	Calculated
H	Number of isolated cases before day 1 (13th March)	23	19	30	10	MOH of KSA
R	Number of removed individuals before day 1 (13th March)	0	0	0	0	MOH of KSA
N	Total Population Size	7000000	3000000	5000000	6500000	MOH of KSA