“…Heartburn, abdominal pain (usually epigastric) and bloating are the most frequent symptoms reported [2, 7. 8], Most patients also report the occurrence of diar rhea, and sometimes steatorrhea can be de tected [9][10][11], Hypochlorhydria, intestinal hypomotility and humoral and/or cellular immunological deficiencies have already been described in strongyloidiasis [6,9,[11][12][13][14], and it has been known that all these disturbances can cause bacterial colonization of the upper small bowel [15]. So, the present study aimed to investigate the aerobic and anaerobic bacte rial flora of the upper jejunum (quantita tively and qualitatively) in patients with proved strongyloidiasis.…”