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Back to Infectious Diseases
Shigella infections
3 diseases:
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Traveler's diarrhea
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Reiter’s syndrome
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Bacillary dysentery
Bacillary dysentery
Bacillary dysentery is caused by infection with Shigella dysenteriae,
flexneri, boydii or Shigella sonnei. All are enteroinvasive but some strains
elaborate a toxin which is enterotoxic, neurotoxic and cytotoxic. The
infection leads to an acute inflammation of the colon resulting in
diarrhea
containing a large number of leucocytes.
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Clinical manifestations
The incubation period is 2 days.
It starts with an acute onset of fever, abdominal pain and
diarrhea.
The
diarrhea gradually becomes bloody with mucus (dysentery) with severe
abdominal pain. Sometimes a cholera like picture may develop. Nausea and
vomiting, headache and convulsions may occur and are probably due to the
effect of a neurotoxin released by the bacteria.
Diagnosis
Stool culture usually reveals the causative organism.
Treatment
Symptomatic treatment and adequate rehydration. Ciprofloxacin given
orally is the antibiotic of choice in the rather more severe cases. Ampicillin,
co-trimoxazole and tetracycline may also be effective.
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