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o
n
.
T
h
e
m
o
s
t
pr
o
m
i
ne
n
t
e
x
a
m
p
l
e
i
s
t
h
e
pr
o
bl
e
m
o
f
pe
r
s
o
n
a
l
pr
ot
e
c
t
i
v
e
e
qu
i
p
m
e
n
t
(
P
P
E
)
l
im
i
t
a
t
i
o
n
s
to
pr
ot
e
c
t
d
o
c
to
r
s
f
r
o
m
t
h
e
r
i
s
k
o
f
i
nf
e
c
t
i
o
n
.
T
h
e
li
mi
t
a
t
i
o
n
o
f
P
P
E
i
s
c
a
us
e
d
by
pa
ni
c
b
u
yi
ng,
s
t
o
c
kp
i
li
ng,
a
n
d
a
b
us
e
w
hi
c
h
c
a
us
e
s
de
m
a
n
d
f
o
r
P
P
E
n
e
e
ds
t
o
i
n
c
r
e
a
s
e
[
7,
8]
.
T
h
e
c
o
ns
e
que
n
c
e
o
f
t
hi
s
f
i
nd
i
ng
is
t
he
s
c
a
r
c
i
t
y
o
f
P
P
E
t
h
a
t
s
h
o
u
l
d
b
e
pr
o
vi
de
d
to
h
e
a
l
t
h
wo
r
ke
r
s
wh
o
tr
e
a
t
pa
t
i
e
n
t
s
w
i
t
h
s
us
pe
c
t
e
d
o
r
c
o
n
f
i
r
m
e
d
C
OV
I
D
-
19
w
hi
c
h
c
a
n
u
l
t
im
a
t
e
l
y
l
e
a
d
to
a
n
i
n
c
r
e
a
s
e
i
n
t
he
n
u
m
be
r
o
f
i
ll
ne
s
s
e
s
a
nd
de
a
t
h
s
o
f
h
e
a
l
t
h
wo
r
ke
r
s
dur
i
n
g
C
OV
I
D
-
19
[
8,
9
]
.
T
h
e
i
n
t
e
r
ne
t
b
e
c
o
m
e
s
m
o
r
e
w
i
de
ly
u
s
e
d
a
s
s
o
ur
c
e
s
o
f
h
e
a
l
t
h
s
e
r
vi
c
e
s
i
n
f
o
r
m
a
t
i
o
n
.
An
a
ly
s
i
s
o
f
i
n
t
e
r
n
e
t
s
e
a
r
c
h
h
a
bi
t
s
i
s
c
a
r
r
i
e
d
o
u
t
t
h
r
o
ugh
i
nf
o
de
mi
o
l
o
g
i
s
t
s
a
n
d
i
nf
o
ve
i
ll
a
nc
e
a
s
a
pu
bli
c
h
e
a
l
t
h
i
n
f
o
r
m
a
t
i
c
s
m
e
t
h
o
d
to
i
nc
r
e
a
s
e
s
i
t
ua
t
i
o
n
a
l
a
w
a
r
e
ne
s
s
a
n
d
a
ppr
o
p
r
i
a
t
e
i
n
t
e
r
ve
n
t
i
o
ns
.
Go
o
gl
e
T
r
e
n
ds
i
s
a
n
a
lt
e
r
n
a
t
i
v
e
f
a
c
il
i
t
y
f
o
r
s
e
a
r
c
hi
ng
da
t
a
o
n
t
h
e
l
e
ve
l
o
f
pu
bli
c
a
tt
e
n
t
i
o
n
t
h
r
o
ugh
r
e
l
a
t
i
v
e
s
e
a
r
c
h
v
o
l
u
m
e
s
(
R
S
V)
.
T
hi
s
da
t
a
c
a
n
b
e
us
e
d
f
o
r
r
e
a
l
-
t
i
m
e
a
n
a
ly
s
i
s
o
f
t
h
e
tr
a
n
s
mi
s
s
i
o
n
,
s
e
ve
r
i
t
y
,
a
n
d
n
a
t
ur
a
l
hi
s
t
o
r
y
o
f
a
d
i
s
e
a
s
e
pa
t
h
o
ge
n
,
a
l
s
o
pr
e
di
c
t
i
o
n
s
o
f
a
n
i
nc
r
e
a
s
e
i
n
i
n
f
e
c
t
e
d
c
a
s
e
s
[
10]
.
C
ha
n
ge
s
i
n
c
o
n
d
i
t
i
o
ns
a
n
d
i
n
f
o
r
m
a
t
i
o
n
i
n
t
h
e
c
o
m
m
u
ni
t
y
de
ve
l
o
p
r
a
p
i
d
ly
du
r
i
ng
a
n
uns
t
a
bl
e
pe
r
i
o
d.
T
r
a
n
s
mi
s
s
i
o
n
o
f
up
-
to
-
da
t
e
a
n
d
r
e
l
i
a
bl
e
i
n
f
o
r
m
a
t
i
o
n
m
u
s
t
b
e
a
to
p
p
r
i
o
r
i
t
y
f
o
r
a
c
hi
e
vi
ng
a
ppr
o
pr
i
a
t
e
a
n
d
e
f
f
e
c
t
i
v
e
r
i
s
k
c
o
m
m
u
ni
c
a
t
i
o
n
[
8]
.
T
h
e
r
e
f
o
r
e
,
r
e
s
e
a
r
c
h
e
r
s
a
r
e
i
n
t
e
r
e
s
t
e
d
i
n
m
o
ni
t
o
r
i
n
g
t
h
e
r
e
s
po
n
s
e
o
f
t
h
e
I
n
do
n
e
s
i
a
n
pe
o
p
l
e
i
n
f
i
nd
i
ng
da
t
a
a
b
o
ut
C
O
VI
D
-
19
dur
i
n
g
t
hi
s
pa
n
de
mi
c
u
s
i
n
g
Go
o
gl
e
t
r
e
n
ds
da
t
a
t
h
a
t
f
o
c
us
e
s
o
n
pr
e
d
i
c
t
i
n
g
a
n
d
m
o
ni
t
o
r
i
n
g
p
e
o
pl
e
'
s
b
e
h
a
vi
o
ur
r
e
ga
r
d
i
ng
pe
r
s
o
n
a
l
pr
o
t
e
c
t
i
o
n
,
w
i
t
h
t
h
e
ho
pe
t
h
a
t
t
h
e
o
u
t
c
o
m
e
o
f
us
i
ng
Go
o
gl
e
t
r
e
n
ds
a
s
a
n
e
a
r
l
y
wa
r
ni
ng
s
y
s
t
e
m
a
n
d
a
too
l
f
o
r
m
o
ni
t
o
r
i
n
g
publi
c
r
e
a
c
t
i
o
n
c
a
n
b
e
us
e
d
t
o
h
e
l
p
r
i
s
k
c
o
m
m
u
ni
c
a
t
i
o
n
dur
i
n
g
t
h
e
C
O
VI
D
-
19
pa
n
de
m
i
c
i
n
I
n
do
n
e
s
i
a
.
2.
RE
S
E
AR
CH
M
E
T
HO
D
Qua
n
t
i
t
a
t
i
v
e
a
n
d
qua
li
t
a
t
i
ve
r
e
s
e
a
r
c
h
us
e
d
t
i
m
e
-
s
e
r
i
e
s
da
t
a
f
r
o
m
31
De
c
e
m
be
r
2019
to
2
M
a
y
2020.
A
n
e
w
C
OV
I
D
-
19
c
a
s
e
r
e
po
r
t
wa
s
o
b
t
a
i
n
e
d
da
i
ly
f
r
o
m
t
h
e
o
f
f
i
c
i
a
l
we
bs
i
t
e
o
f
t
h
e
t
a
s
k
f
o
r
c
e
f
o
r
t
h
e
a
c
c
e
l
e
r
a
t
i
o
n
o
f
C
OV
I
D
-
19
ha
n
d
l
i
ng
i
n
I
n
do
n
e
s
i
a
by
t
h
e
n
a
t
i
o
n
a
l
d
i
s
a
s
t
e
r
m
i
t
i
ga
t
i
o
n
a
ge
n
c
y
(
B
adan
N
as
ional
P
e
nanggulangan
B
e
nc
ana
)
(
h
t
t
ps
:/
/b
n
p
b
-
i
na
c
o
vi
d19.
h
u
b
.
a
r
c
g
i
s
.
c
o
m
/)
.
A
Go
o
gl
e
t
r
e
n
ds
(
GT
)
s
e
a
r
c
h
wa
s
c
o
n
duc
t
e
d
(
h
tt
ps
:/
/
t
r
e
n
ds
.
goo
g
l
e
.
c
o
m
/t
r
e
n
ds
)
w
i
t
h
t
h
e
ke
y
wo
r
ds
„
mas
k
e
r
‟
(
m
a
s
k)
a
n
d
„
c
uc
i
tangan
‟
(
h
a
n
dwa
s
hi
ng)
a
t
t
h
e
s
a
m
e
t
i
me.
T
h
e
ke
y
wo
r
ds
o
ugh
t
to
r
e
pr
e
s
e
n
t
i
nf
o
r
m
a
t
i
o
n
f
r
o
m
t
h
e
pr
a
c
t
i
c
e
o
f
pe
r
s
o
n
a
l
pr
e
v
e
n
t
i
o
n
a
s
a
m
e
a
s
ur
e
o
f
h
a
n
d
l
i
ng
C
O
VI
D
-
19
di
s
e
a
s
e
t
r
a
n
s
m
i
s
s
i
o
n
.
E
v
e
r
y
r
e
l
a
t
e
d
s
p
i
ke
f
o
un
d
a
n
a
ly
z
e
d
qu
a
l
i
t
a
t
i
v
e
ly
a
s
a
dd
i
t
i
o
n
a
l
i
n
f
o
r
m
a
t
i
o
n
.
T
h
e
r
e
l
a
t
i
v
e
s
e
a
r
c
h
v
o
l
u
m
e
s
(
R
S
V)
o
f
e
a
c
h
ke
y
wo
r
d
a
r
e
r
e
l
a
t
i
ve
t
o
t
i
m
e
r
e
pr
e
s
e
n
t
e
d
by
t
h
e
v
a
l
ue
100
f
o
r
t
h
e
hi
g
h
e
s
t
l
e
v
e
l
a
n
d
0
f
o
r
t
h
e
l
o
we
s
t
l
e
v
e
l
.
T
h
e
R
S
V
GT
da
t
a
wa
s
c
o
m
pa
r
e
d
w
i
t
h
t
h
e
n
e
w
da
il
y
c
a
s
e
s
da
t
a
o
b
t
a
i
ne
d
f
r
o
m
t
h
e
o
f
f
i
c
i
a
l
we
b
s
i
t
e
o
f
t
h
e
t
a
s
k
f
o
r
c
e
f
o
r
t
h
e
a
c
c
e
l
e
r
a
t
i
o
n
o
f
h
a
n
d
li
ng
C
OV
I
D
-
19
i
n
I
n
do
n
e
s
i
a
.
T
i
me
-
l
a
gge
d
c
o
r
r
e
l
a
t
i
o
n
i
n
t
h
e
t
h
r
e
e
-
da
y
i
n
t
e
r
v
a
l
o
f
t
h
e
n
u
m
b
e
r
o
f
C
OV
I
D
-
19
da
i
ly
n
e
w
c
a
s
e
s
a
n
d
GT
da
t
a
wa
s
us
e
d
to
a
s
s
e
s
s
b
e
t
we
e
n
t
h
e
c
o
r
r
e
l
a
t
i
o
n
o
f
t
he
i
nc
r
e
a
s
e
i
n
GT
da
t
a
a
n
d
t
h
e
i
nc
r
e
a
s
e
i
n
C
OV
I
D
-
19
c
a
s
e
s
,
a
s
h
a
s
b
e
e
n
do
n
e
i
n
pr
e
vi
o
us
s
t
ud
i
e
s
[
11
,
12
]
.
3.
RE
S
UL
T
S
A
ND
DI
S
CU
S
S
I
ON
An
a
ly
s
i
s
o
f
t
h
e
da
t
a
i
n
F
i
gur
e
1
s
h
o
ws
t
h
e
t
i
m
e
s
e
r
i
e
s
o
f
C
OV
I
D
-
19
c
a
s
e
s
i
n
I
n
do
ne
s
i
a
f
r
o
m
31
De
c
e
m
be
r
2019
t
o
2
M
a
y
2020.
T
h
e
f
i
r
s
t
c
a
s
e
i
n
I
n
do
n
e
s
i
a
e
m
e
r
ge
d
o
n
2
M
a
r
c
h
2020
a
n
d
ha
s
r
e
l
a
t
i
v
e
ly
i
nc
r
e
a
s
e
d
to
t
h
e
pr
e
s
e
n
t
[
3]
.
T
h
e
t
i
m
e
s
e
r
i
e
s
o
f
th
e
C
OV
I
D
-
19
c
a
s
e
i
ll
us
t
r
a
t
e
d
i
n
a
s
i
ng
l
e
gr
a
p
hi
c
a
l
f
o
r
m
a
l
o
n
g
w
i
t
h
Go
o
gl
e
T
r
e
n
ds
da
t
a
.
B
a
s
e
d
o
n
t
h
e
s
e
a
r
c
h
t
e
r
m
s
f
r
o
m
Go
o
gl
e
T
r
e
n
d
s
,
t
h
e
r
e
we
r
e
4
pe
a
ks
o
n
t
h
e
ke
y
wo
r
d
„
mas
k
e
r
’
a
n
d
3
pe
a
k
s
o
n
t
h
e
ke
y
w
o
r
d
„
c
uc
i
tangan
‟
.
F
i
gur
e
1
a
l
s
o
s
h
o
ws
s
e
a
r
c
h
i
nf
o
r
m
a
t
i
o
n
us
i
n
g
t
h
e
ke
y
wo
r
d
„
mas
k
e
r
‟
h
a
vi
ng
a
hi
g
h
e
r
va
l
ue
t
h
a
n
t
h
e
C
O
VI
D
-
19
c
a
s
e
r
e
po
r
t
,
whi
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n
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f
o
r
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y
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l
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t
e
d
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pe
r
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l
pr
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e
c
t
i
o
n
1
-
3
da
y
s
be
f
o
r
e
t
h
e
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n
c
r
e
a
s
e
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n
c
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e
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t
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o
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r
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da
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m
p
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o
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r
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wa
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ni
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g
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v
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ll
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e
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i
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publ
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c
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l
t
h
r
e
s
po
n
s
e
i
n
I
n
do
n
e
s
i
a
[
12]
.
I
n
2018,
i
n
t
e
r
n
e
t
us
e
r
s
i
n
I
n
do
n
e
s
i
a
r
e
a
c
h
e
d
o
v
e
r
150
m
il
li
o
n
w
i
t
h
56%
pe
n
e
t
r
a
t
i
o
n
s
pr
e
a
d
t
h
r
o
ugh
o
u
t
t
h
e
r
e
g
i
o
n
,
whil
e
t
h
e
n
u
m
be
r
o
f
m
o
bi
l
e
i
n
t
e
r
n
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t
us
e
r
s
wa
s
142.
8
mi
ll
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o
n
p
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o
p
l
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w
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t
h
a
p
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n
e
t
r
a
t
i
o
n
pe
r
c
e
n
t
a
ge
o
f
53%
.
T
h
e
s
ur
ve
y
r
e
s
u
l
t
s
o
f
t
h
e
I
n
do
n
e
s
i
a
n
i
n
t
e
r
n
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t
s
e
r
vi
c
e
pr
o
vi
de
r
s
a
s
s
o
c
i
a
t
i
o
n
(
A
s
os
ias
i
P
e
ny
e
lengga
r
a
J
as
a
I
nter
ne
t
I
ndone
s
i
a/A
P
J
I
I
)
i
n
2018
t
h
a
t
i
n
t
e
r
n
e
t
us
e
r
s
s
t
i
l
l
h
a
d
t
he
hi
g
h
e
s
t
pe
r
c
e
n
t
a
ge
in
J
a
v
a
(
95.
3
m
il
li
o
n
pe
o
p
l
e
w
i
t
h
55
.
7
%
pe
n
e
t
r
a
t
i
o
n
)
a
n
d
S
u
m
a
t
r
a
(
36.
9
m
il
li
o
n
pe
o
p
l
e
w
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t
h
a
pe
n
e
t
r
a
t
i
o
n
r
a
t
e
o
f
21.
6%
)
[
3
1
].
T
h
e
n
u
m
be
r
o
f
i
n
t
e
r
ne
t
us
e
r
s
i
n
v
a
r
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o
us
l
o
c
a
t
i
o
ns
c
a
n
de
t
e
r
m
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ne
t
h
e
v
o
l
u
m
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f
i
n
t
e
r
ne
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s
e
a
r
c
he
s
.
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n
ge
n
e
r
a
l
,
t
h
e
r
e
wa
s
a
hi
g
h
e
r
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o
r
r
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l
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t
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o
n
w
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t
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hi
g
he
r
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t
e
r
n
e
t
pe
n
e
t
r
a
t
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o
n
r
a
t
e
s
[
11
].
Ot
h
e
r
s
t
udi
e
s
a
l
s
o
s
h
o
w
c
ha
l
l
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nge
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l
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to
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pe
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t
r
a
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o
n
a
n
d
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m
a
t
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o
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k
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ng
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a
vi
o
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t
h
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im
p
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t
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f
Go
o
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e
T
r
e
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d
s
r
e
s
e
a
r
c
h
in
I
n
do
n
e
s
i
a
[
29
].
Ot
h
e
r
r
e
s
e
a
r
c
h
s
t
a
t
e
d
t
h
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oo
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e
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r
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d
s
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o
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t
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bl
e
f
o
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us
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de
ve
l
o
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o
un
t
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w
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de
r
i
n
t
e
r
n
e
t
pe
n
e
t
r
a
t
i
o
n
[
24
]
.
T
h
e
a
pp
l
i
c
a
t
i
o
n
o
f
t
h
e
u
s
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o
f
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r
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n
ds
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g
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o
ns
w
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l
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w
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t
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pe
ne
t
r
a
t
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s
s
t
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ll
a
c
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ll
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ge
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n
d
v
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l
i
da
t
i
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n
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e
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de
d
t
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us
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Goo
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d
s
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g
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w
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hi
g
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n
do
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i
a
w
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t
h
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t
pe
ne
t
r
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t
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o
n
l
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v
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l
s
a
s
a
c
o
m
pa
r
i
s
o
n
.
E
a
c
h
c
o
un
t
r
y
h
a
s
i
t
s
c
o
n
d
i
t
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o
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s
t
ha
t
c
a
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a
f
f
e
c
t
t
h
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uc
c
e
s
s
f
u
l
im
p
l
e
m
e
n
t
a
t
i
o
n
o
f
C
OV
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D
-
19
t
r
a
n
s
m
i
s
s
i
o
n
h
a
n
d
li
ng
e
f
f
o
r
t
s
t
h
a
t
c
a
us
e
t
h
e
m
e
t
h
o
d
v
a
r
i
e
d
[
3
2
]
.
S
o
m
e
s
t
r
a
t
e
gi
e
s
pr
o
v
e
n
to
b
e
a
bl
e
to
r
e
duc
e
C
OV
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D
-
19
t
r
a
n
s
m
i
s
s
i
o
n
r
a
t
e
s
we
r
e
t
h
e
im
p
l
e
m
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t
a
t
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o
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o
f
p
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l
d
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s
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n
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i
ng
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t
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pe
c
i
f
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c
l
o
c
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t
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n
s
,
m
a
s
s
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ns
p
e
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t
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o
n
e
f
f
o
r
t
s
,
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s
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t
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o
n
o
f
P
P
E
e
x
po
r
t
s
,
a
n
d
t
h
r
o
ugh
s
t
r
i
c
t
i
nf
e
c
t
i
o
n
c
o
n
t
r
o
l
m
e
a
s
ur
e
s
[
3
3
-
3
5
]
.
I
n
I
n
do
n
e
s
i
a
,
p
hy
s
i
c
a
l
d
i
s
t
a
n
c
i
ng
m
e
a
s
ur
e
s
h
a
v
e
b
e
e
n
c
a
r
r
i
e
d
o
ut
t
h
r
o
ugh
l
a
r
ge
-
s
c
a
l
e
s
o
c
i
a
l
r
e
s
t
r
i
c
t
i
o
ns
pr
o
pa
ga
n
da
(
P
S
B
B
)
to
s
to
p
t
r
a
n
s
m
i
s
s
i
o
n
o
f
C
OV
I
D
-
19,
b
ut
i
n
i
t
s
im
p
l
e
m
e
n
t
a
t
i
o
n
,
t
h
e
P
S
B
B
h
a
s
not
t
a
ke
n
p
l
a
c
e
e
f
f
e
c
t
i
v
e
ly
w
i
t
h
t
h
e
n
u
m
be
r
o
f
n
e
w
c
a
s
e
s
c
o
n
t
i
n
ue
s
t
o
gr
o
w
[
3
6
,
3
7
]
.
Al
s
o
,
I
n
do
n
e
s
i
a
i
s
s
t
i
ll
o
n
e
o
f
t
h
e
c
o
un
t
r
i
e
s
w
i
t
h
t
h
e
l
o
we
s
t
C
OV
I
D
-
19
e
x
a
mi
na
t
i
o
n
r
a
t
e
i
n
t
h
e
wo
r
l
d
[
3
7
]
.
R
e
s
e
a
r
c
h
e
r
s
a
dvi
s
e
t
h
e
go
v
e
r
nm
e
n
t
to
t
a
ke
s
t
e
ps
to
de
a
l
w
i
t
h
C
OV
I
D
-
19
t
h
r
o
ug
h
e
f
f
o
r
t
s
to
i
n
c
r
e
a
s
e
t
h
e
e
f
f
e
c
t
i
v
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ne
s
s
o
f
P
S
B
B
by
e
s
t
a
bl
i
s
h
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ng
a
ggr
e
s
s
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ve
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e
g
a
l
pr
o
c
e
dur
e
s
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f
f
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n
de
r
s
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d
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nc
r
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s
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h
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m
be
r
o
f
t
e
s
t
s
b
a
s
e
d
o
n
po
pul
a
t
i
o
n
s
i
z
e
.
4.
CONC
L
USI
ON
B
a
s
e
d
o
n
t
h
e
s
e
f
i
nd
i
ngs
,
GT
h
a
s
t
h
e
po
t
e
n
t
i
a
l
t
o
b
e
a
t
oo
l
f
o
r
m
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ni
t
o
r
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n
g
pe
r
s
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l
pr
o
t
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c
t
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o
n
e
f
f
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t
s
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n
t
h
e
c
o
m
m
u
ni
t
y
a
s
a
r
e
s
u
l
t
o
f
t
h
e
C
OV
I
D
-
19
pa
n
de
mi
c
i
n
I
n
do
n
e
s
i
a
i
n
1
-
3
da
y
s
b
e
f
o
r
e
t
h
e
i
nc
r
e
a
s
e
i
n
t
h
e
n
u
m
be
r
o
f
c
a
s
e
s
,
a
s
we
ll
a
s
de
t
e
r
m
i
ne
t
h
e
a
ppr
o
p
r
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a
t
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o
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t
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d
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o
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c
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t
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v
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a
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d
pr
o
m
ot
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ve
m
e
a
s
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e
.
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ly
s
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s
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pe
r
s
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pr
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c
t
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t
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publi
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s
,
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C
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pe
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c
o
m
m
uni
t
y
k
n
o
w
l
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dge
i
n
C
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pr
e
v
e
n
t
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n
w
il
l
be
b
e
t
t
e
r
.
T
h
e
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h
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r
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s
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t
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t
c
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Evaluation Warning : The document was created with Spire.PDF for Python.