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Author Topic: Ticks Don’t Come Out in the Wash / Zecken überleben Vollwaschgang  (Read 655 times)

ama

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Ticks Don’t Come Out in the Wash

By Ann Perry
October 5, 2007

Before venturing into tick-infested territory, you used a topical repellant on
exposed skin and outer clothing. When you returned, you did a body check and
threw your clothes in the wash. But clean clothes may not be tick-free clothes.
When he found a live lone star tick (Amblyomma americanum) on the agitator of
his washing machine, Agricultural Research Service (ARS) entomologist John
Carroll decided to find out how tough ticks are. So he bagged up nymphs from
two species—the lone star tick and the deer tick, (Ixodes scapularis), the
creature that transmits Lyme disease—and put them in the washing machine.

Carroll used a combination of water temperature settings and detergent types
to wash the ticks. The majority of lone star ticks survived all the water-detergent
combinations with no obvious side effects. Most of the deer ticks lived through
the cold and warm water settings as well. But when one type of detergent was
used with a hot water setting, only 25 percent of the deer ticks survived.

When it came time to dry, all the ticks of both species died after an hour of
tumbling around at high heat. But when the dryer was set to "no heat," about
one-third of the deer ticks and more than half of the lone star ticks survived.
Carroll placed the ticks in mesh bags, which kept them from draining away
during the rinse cycle and perhaps increased their odds for survival. However,
ticks might also survive a sudsy interlude by sheltering in the folds and crevices
of a typical load of laundry. Some tick species have been observed to survive
hours of submersion in fresh water.
Both adult ticks and nymphs can transmit disease. Carroll’s research reinforces
recommendations by the U.S. Centers for Disease Control and Prevention to
wash and dry clothes at high temperatures after spending time in areas known to
harbor ticks.

Carroll conducts research at the ARS Animal Parasitic Diseases Laboratory,
Beltsville, Md.
ARS is the U.S. Department of Agriculture's chief scientific research agency.
Last Modified: 10/05/2007
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Source:
http://www.ars.usda.gov/is/pr/2007/071005.htm




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Warnung: Zecken überleben Vollwaschgang

derStandard.at | Wissenschaft | Natur
19.10.2007 18:45
[...]

John Carroll soll einem Bericht im Münchner Fachmagazin "MMW -
Fortschritte der Medizin" (Nr. 42/2007) zufolge die Spinnentiere in
der Waschmaschine getestet und dabei festgestellt haben, dass Zecken
sogar einen Vollwaschgang überleben können.

[...] ... wobei sich zeigte, dass ein signifikanter Teil der Tiere
sogar die Heißwäsche bei rund fünfzig Grad Celsius überlebte. Die
Behandlung im Wäschetrockner konnte zwar alle Zecken zur Strecke
bringen - allerdings nur, wenn die Temperatur auf höchste Stufe
gestellt war.

[..]

Einen Zeckenbiss könne man sich also auch noch Tage nach einem
Waldspaziergang einhandeln, wenn man die Tiere mit der Kleidung nach
Hause getragen habe.

©derStandard.at
2007
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mehr:
http://derStandard.at/Text/Corporate/?id=3080978


Mütter können sich nicht darauf verlassen, daß sie die Kleidung, in der
die Kinder im Freien und im Gebüsch herumgetobten, durch Waschen WIRKLICH
sauber kriegen. Es können noch immer lebendige Zecken drin sein...


ama
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