Kahbazi M Kahbazi, Dorreh F Dorreh, Najmi AR Najmi, M. Arjomandzadegan


Background: Dysentery is one of the children’s common disease for which various infectious and
non-infectious reasons have been explained for it. Since determination of the cause especially with
age segregation helps the experimental treatment, this study has been executed to establish relative
0frequency of dysentery causes and its comparison below and above the age of six months.
Methods: This descriptive, sectional study has been executed on 50 below-six-month-old patients
and 50 above-six-month-old patients both diagnosed with dysentery, held in the infection ward of
Amir Kabir Hospital in 2010–2011. Faeces samples were taken for culture of Shigella, Yersinia,
Salmonella, and E. coli, and serum samples were also taken for antibody against the Campylobacter,
Yersinia, and allergy to cow milk protein; then results were analysed with SPSS. Results: In 60% of
patients the cause could not be determined. In 12% of patients, faeces culture was positive, yet the
positive faeces culture in two groups had no significant difference (p=0.053) 7% of antibody against
Yersinia, and 14% against the Campylobacter was positive which was more significantly differed in
above-six-month group than below-six-month group. Ten percent were allergic to the cow milk
protein which was more significantly differed in above-six-month group than below-six-month
group. Conclusion: In more than half of the cases the cause to dysentery could not be identified, but
the infectious reasons for above-six-month were double the below-six-month group. Campylobacter,
and cow milk allergy was more common in the six-month group, and the frequency of Shigella and
other infections in both groups did not have a significant difference.
Keywords: Campylobacter, children, cow milk allergy, dysentery, Shigella

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