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Acceptance and use of communal filtration units in guinea worm eradication.
[dracunculiasis]
The
use
of
cloth
to
filter
drinking
water
for
guinea
worm
prevention
is
a
long
-standing
control
strategy
and
part
of
a
mixed
approach
that
includes
the
provision
of
wells
,
chemical
treatment
of
ponds
and
protection
of
water
supplies
.
As
the
goal
of
eradication
nears
,
filters
are
a
useful
component
of
the
quick
response
needed
to
implement
case
containment
at
village
level
.
Various
designs
of
filters
have
been
used
.
Individual
hand
-sewn
filters
(
HSFs
)
using
monofilament
nylon
cloth
have
played
a
central
role
in
village
-based
control
to
date
.
Problems
such
as
the
need
to
continually
reinforce
correct
habitual
filtering
behaviour
have
led
to
the
design
and
testing
of
communal
filtration
units
(
CFUs
)
made
from
metal
oil
drums
with
filter
cloth
inserted
in
the
top
and
spigots
at
the
bottom
.
Approximately
one
year
after
the
introduction
of
CFUs
in
the
South
-
western
Zone
of
Nigeria
,
village
surveys
were
conducted
to
determine
opinions
about
the
two
types
of
filters
and
reported
use
.
Percentage
use
was
calculated
by
dividing
the
number
of
times
water
was
filtered
in
the
week
preceding
the
survey
by
the
number
of
times
water
was
collected
in
that
week
.
Those
respondents
with
access
to
CFUs
filtered
an
average
of
91
.
9
%
of
the
time
compared
to
75
.
7
%
of
those
with
HSFs
.
Using
the
village
as
level
of
analysis
since
it
was
the
main
level
of
intervention
,
the
average
percent
of
times
villagers
in
CFU
villages
filtered
was
91
.
1
%
compared
to
77
.
8
%
in
HSF
villages
.
Although
CFUs
were
more
expensive
in
the
short
run
,
their
greater
acceptance
by
villagers
is
a
factor
to
recommend
their
wider
implementation
to
speed
up
elimination
of
guinea
worm
from
Nigeria
.
Diseases
Validation
Diseases presenting
"their greater acceptance by villagers is a factor to recommend their wider implementation to speed up elimination of guinea worm from nigeria"
symptom
dracunculiasis
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