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Prevalence of Legionella strains in cooling towers and legionellosis cases in New Zealand.
[legionellosis]
Over
3
,
900
water
samples
from
688
cooling
towers
were
tested
for
Legionella
in
2008
in
New
Zealand
.
Of
80
(
2
.
05
%
isolation
rate
)
Legionella
isolates
,
10
(
12
.
5
%
)
were
L
.
pneumophila
serogroup
1
;
10
(
12
.
5
%
)
were
L
.
anisa
;
nine
(
11
.
2
%
)
were
L
.
pneumophila
serogroup
8
;
and
one
(
1
.
2
%
)
was
L
.
longbeachae
serogroup
2
.
Forty
-
one
(
51
.
2
%
)
Legionella
isolates
were
L
.
pneumophila
serogroups
.
Over
3
,
990
water
samples
from
606
cooling
towers
were
tested
for
Legionella
in
2009
in
New
Zealand
.
Of
51
(
1
.
28
%
isolation
rate
)
Legionella
isolates
,
18
(
35
.
3
%
)
were
L
.
pneumophila
serogroup
1
,
and
39
(
76
.
4
%
)
were
other
L
.
pneumophila
serogroups
.
L
.
pneumophila
serogroups
were
significantly
associated
with
legionellosis
cases
in
2008
and
2009
.
L
.
longbeachae
serogroups
were
equally
significantly
associated
with
legionellosis
cases
.
This
significant
association
of
L
.
longbeachae
with
legionellosis
particularly
of
L
.
longbeachae
serogroup
1
is
unique
in
that
part
of
the
world
.
The
authors
'
study
also
showed
that
the
aqueous
environment
of
the
cooling
tower
is
not
a
natural
habitat
for
pathogenic
L
.
longbeachae
.
Regular
monitoring
and
maintenance
of
cooling
towers
have
prevented
outbreaks
of
legionellosis
.
Diseases
Validation
Diseases presenting
"legionellosis cases"
symptom
legionellosis
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