Stool findings in "chronic dysentery"

• Faecal samples from 63 subjects with self-diagnosis of "chronic dysentery" and 50 control subjects were examined under light microscope. Vegetative form of E.h. was not detected in any of them. E.h. cyst was found in 6.3% of the "chronic dysentery" subjects and in 16% of the control subjects. E. coli and Giardia were also detected less often in the "chronic dysentery" than the control subjects. Lower incidence of protozoa namely E.h. cyst, E. coli cyst or Giardia in the former group was probably due to frequent intake of antiamoebic agents which are also effective against other intestinal protozoa. Incidence of Ascaris, hookworm, and Trichuris was not appreciably different in the two groups. More subjects in the "chronic dysentery" group had normal stool findings (31%) as compared to the control subjects (16%). It has been inferred that E.h. infection is not the cause of symptoms of "chronic dysentery".

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