The studies on the standard plate count, most probable number(MPN) and isolation of the Enterobacteriaceae, especially Salmonella species from stream waters of Kyong-Ju city were carried out from June to July, 1988. The relationship between water temperature, weather and standard plate count were observed. The locations where all of the MPN was higher than 1,600 were Mun-chon bridge, Wol-song bridge, Go-hun bridge and the area adjoining the Hyong-san river. The higher the water temperature, the more the viable counts without rain. Bacteriological survey of the Salmonella species was performed with the total 80 specimens isolated from 16 areas which are the main streams in Kyong-Ju city. The author identified 5 strains(2.36%) of Salmonella typhi, 5 strains(2.3%) of Salmonella paratyphi, 2 strains(1.42%) of Salmonella paratyphi B, 63 strains(29.72%) of other Salmonella groups by biochemical tests and serotyping tests with slide agglutination.
Agglutination ; Enterobacteriaceae ; Gyeongsangbuk-do* ; Rain ; Rivers* ; Salmonella ; Salmonella paratyphi A ; Salmonella paratyphi B ; Salmonella typhi ; Serotyping ; Water ; Weather

<b>INTRODUCTIONb>Enteric fever is a common infection in endemic areas; however, there are few reports describing the computed tomography (CT) manifestations of enteric fever. We aim to describe and illustrate CT findings in enteric fever in this study.

<b>MATERIALS AND METHODSb>A retrospective search of medical records in our institute for patients with positive blood cultures for Salmonella typhi, and Salmonella paratyphi organisms yielded 39 cases. Among these patients, 12 had undergone a CT study of the abdomen. The CT images, laboratory and clinical findings of these 12 patients were reviewed.

<b>RESULTSb>The most common clinical presentation was fever (100%). Typical features of gastroenteritis were present in only over half of the patients. Liver function tests were abnormal in all patients. The most common abdominal manifestations on CT were the presence of mesenteric lymphadenopathy and splenomegaly (75%). Other features were circumferential small bowel wall thickening (58.3%) and free intraperitoneal fluid (50%). Three patients were found to have complications; one with bleeding from terminal ileal ulceration, another with an ileal perforation and the third with renal abscess formation.

<b>CONCLUSIONb>CT is useful in evaluating enteric fever in patients with severe forms of presentation, a longer clinical course or less specific symptoms. Although the imaging features overlap with other abdominal infections, when combined with clinical features, travel history to endemic areas and presence of transaminitis, the diagnosis of enteric fever should be considered. CT in particular, is useful for the detection of complications such as perforation, bleeding and abscess formation.

Abscess ; diagnostic imaging ; Adolescent ; Adult ; Aged ; Ascitic Fluid ; diagnostic imaging ; Child ; Child, Preschool ; Female ; Humans ; Intestine, Small ; diagnostic imaging ; Lymphatic Diseases ; diagnostic imaging ; Male ; Middle Aged ; Paratyphoid Fever ; diagnostic imaging ; Radiography, Abdominal ; Retrospective Studies ; Salmonella paratyphi A ; Salmonella paratyphi B ; Salmonella typhi ; Splenomegaly ; diagnostic imaging ; Tomography, X-Ray Computed ; Typhoid Fever ; diagnostic imaging