Figure 1:
𝐼
versus
𝑆
, where
𝑏
=
2
0
,
𝛽
=
0
.
0
1
,
𝛾
=
0
.
4
,
𝜇
=
0
.
2
,
𝜎
=
5
, and
𝑅
0
≈
0
.
8
3
satisfy stable condition for the virus-free equilibrium
𝐸
0
(50.00, 0).
