RT - Journal Article T1 - Study the Frequency of Intestinal Parasites and its Association with Clinical Symptoms in Patients who Referred to Hamadan Health Centers in 1998-99 JF - umsha YR - 2001 JO - umsha VO - 7 IS - 4 UR - http://sjh.umsha.ac.ir/article-1-910-en.html SP - 0 EP - 0 K1 - Intestinal Parasitic Diseases - diagnosis / Intestinal Parasitic Diseases - epidemiology AB - Intestinal protozoa and helminths are aetiological agents of several widespread parasitic diseases. The most common ones are Entamoeba histolytica , Giardia lamblia and Ascaris lumbricoides. The main purposes of this study were determination the frequency of intestinal parasites,and study the clinical symptoms of patients and also to indicate the correlation between symptoms and parasitic infection and the kind of parasites. Two hundreds and twenty seven patients were examined by physicians and directed to parasitology laboratory for stool examination by direct method and formol - ether (concentration method ). The demographic characteristic and the gasterointestinal symptoms of patients were provided through questionaire. Frequency of parasitic helminths and protozoa were 20.2% and 22.9% respectively. However 42.6% of the patients were infected by at least one pathogenic parasites . The most infected cases had G.lamblia (19.3%),and the most common symptom was abdomen pain and the least one was vomiting. In the Ascaris infected cases, the most common symptom was vomiting (57.1%) and in the Giardia infected cases, the most common symptom was abdomen pain (64.7%). Ascaris and Giardia had the highest prevalence among the studied patients. The prevalence of pathogenic intestinal parasites in study group who had gastrointestinal symptoms was high (42.6%). The main symptoms were the same as those usually observed in patients infected with intestinal parasites. Some of non-pathogenic diseases may also cause similar symptoms. LA eng UL http://sjh.umsha.ac.ir/article-1-910-en.html M3 ER -