[Elizabeth_Zeibig]_Clinical_Parasitology__A_Practi(z-lib.org)

CHAPTER 13 The Arthropods
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Treatment
There are several prescription creams and lotions
that can be used to treat mite infestations. It is
also important to clean and disinfect clothing,
bedding, and towels thoroughly by washing in
hot water and drying in a hot clothes dryer.
Prevention and Control
Prevention and control are usually a concern
after the fact. Because mites are ubiquitous, it is
almost impossible to prevent contact unless there
is an individual who is known to be infested. The
focus is to prevent the spread to unaffected individuals
and to prevent reinfestation of the initial
case. This includes making sure that all clothing,
bedding, and towels are washed in hot water and
dried in a hot clothes dryer. If clothes cannot be
washed right away, placing them in a plastic bag
will prevent mites from spreading and finding
another meal source. They will die within a few
weeks without feeding, but this method should
not be relied on to prevent their spread.
Quick Quiz! 13-7
Quick Quiz! 13-9
The best way to remove mites from infected clothing
and linens is to do which of the following? (Objective
13-10)
A. Wash in cold water; fluff dry.
B. Wash in warm water; fluff dry.
C. Wash in warm water; dry at medium heat.
D. Wash in hot water; dry at high heat.
Spiders
Morphology
Most people easily recognize the typical spider
morphology (Fig. 13-6; Table 13-3). Spiders are
found worldwide but only a few inflict damage
through a venomous bite. The three species that
may be found in the United States include the
black widow (Latrodectus mactans), brown
recluse (Loxosceles reclusa), and hobo (Tegenaria
agrestis) spiders. The black widow spider is
so-named because it is the female with the venomous
bite who may kill the male after mating.
Both male and female black widow spiders have
a shiny black surface. The female is larger than
the male and has the diagnostic red hourglass
shape on the underside of her abdomen. Their
webs are described as atypical or chaotic because
The typically mite evolves from eggs to adults in this
time frame. (Objective 13-6)
A. 2 days
B. 2 weeks
C. 2 months
D. 2 years
Quick Quiz! 13-8
Which of the following genera contain the organisms
responsible for the disease scabies caused by the itch
mite? (Objective 13-8 and 13-11)
A. Sarcoptes spp.
B. Pediculus spp.
C. Ornithodorus spp.
D. Dermatophagoides spp.
FIGURE 13-6 Adult spider.