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What
is shigellosis? |
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Shigellosis is an infectious disease
caused by a group of bacteria called
Shigella. Most who are infected
with Shigella develop diarrhea,
fever, and stomach cramps starting
a day or two after they are exposed
to the bacterium. The diarrhea is
often bloody. Shigellosis usually
resolves in 5 to 7 days. In some
persons, especially young children
and the elderly, the diarrhea can
be so severe that the patient needs
to be hospitalized. A severe infection
with high fever may also be associated
with seizures in children less than
2 years old. Some persons who are
infected may have no symptoms at
all, but may still pass the Shigella
bacteria to others.
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What
sort of germ is Shigella? |
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The
Shigella germ is actually a family
of bacteria that can cause diarrhea
in humans. They are microscopic
living creatures that pass from
person to person. Shigella were
discovered over 100 years ago by
a Japanese scientist named 'Shiga',
for whom they are named. There are
several different kinds of Shigella
bacteria: dysenteriae Shigella sonnei,
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How can Shigella infections be diagnosed? |
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Many different kinds of diseases
can cause diarrhea and bloody diarrhea,
and the treatment depends on which
germ is causing the diarrhea. Determining
that Shigella is the cause of the
illness depends on laboratory tests
that identify Shigella in the stools
of an infected person. These tests
are sometimes not performed unless
the laboratory is instructed specifically
to look for the organism. The laboratory
can also do special tests to tell
which type of Shigella the person
has and which antibiotics, if any,
would be best to treat it.
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How
can Shigella infections be
treated? |
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Though, Shigellosis can usually
be treated with antibiotics. It
is best to consult your doctor for
proper diagnosis and laboratory
tests.Appropriate treatment kills
the Shigella bacteria that might
be present in the patient's stools,
and shortens the illness. Unfortunately,
some Shigella bacteria have become
resistant to antibiotics and using
antibiotics to treat shigellosis
can actually make the germs more
resistant in the future.when many
persons in a community are affected
by shigellosis, antibiotics are
sometimes used selectively to treat
only the more severe cases. Antidiarrheal
agents such as loperamide (Imodium)
or diphenoxylate with atropine (Lomotil)
are likely to make the illness worse
and should be avoided.
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How
do people catch Shigella? |
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The
Shigella bacteria pass from one
infected person to the next. Shigella
are present in the diarrheal stools
of infected persons while they are
sick and for a week or two afterwards.
Most Shigella infections are the
result of the bacterium passing
from stools or soiled fingers of
one person to the mouth of another
person. This happens when basic
hygiene and handwashing habits are
inadequate. It is particularly likely
to occur among toddlers who are
not fully toilet-trained. Family
members and playmates of such children
are at high risk of becoming infected.
Shigella infections may also be
acquired from eating contaminated
food. Contaminated
food may look and smell normal.
Food may become contaminated by
infected food handlers who forget
to wash their hands with soap after
using the bathroom. Vegetables can
become contaminated if they are
harvested from a field with sewage
in it. Flies can breed in infected
feces and then contaminate food.
Shigella infections can also be
acquired by drinking or swimming
in contaminated water. Water may
become contaminated if sewage runs
into it, or if someone with shigellosis
swims in it.
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What can a person do to prevent this
illness? |
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There
is no vaccine to prevent shigellosis.
However, the spread of Shigella
from an infected person to other
persons can be stopped by frequent
and careful handwashing with soap.
Frequent and careful handwashing
is important among all age groups.
Frequent, supervised handwashing
of all children should be followed
in day care centers and in homes
with children who are not completely
toilet-trained (including children
in diapers) in diapers should not
be in contact with uninfected children.
People who have shigellosis should
not prepare food or pour water for
others until they have been shown
to no longer be carrying the Shigella
bacterium.
If
a child in diapers has shigellosis,
everyone who changes the child's
diapers should
be sure the diapers are disposed
of properly in a closed-lid garbage
can, and should wash his or her
hands carefully with soap and warm
water immediately after changing
the diapers. After use, the diaper
changing area should be wiped down
with a disinfectant.
Simple precautions taken while travelling
can prevent getting shigellosis.
Drink only treated or boiled water,
and eat only cooked hot foods or
fruits you peel yourself. The same
precautions prevent traveler's diarrhea
in general.
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