Figure 2:
Evolutions of
𝑆
(
𝑡
)
and
𝐼
(
𝑡
)
for the system with
𝛽
=
0
.
3
,
𝛿
=
0
.
1
,
𝛼
1
=
0
.
2
,
𝛼
2
=
0
.
4
,
𝛾
1
=
0
.
1
and
𝛾
2
=
0
.
2
, provided
𝑆
(
0
)
=
0
.
5
and
𝐼
(
0
)
=
0
.
4
.
