[Investigation on the infection of Blastocystis hominis in populations in Bama Yao Autonomous County of Guangxi].

497 fecal specimens were collected from 5 randomly selected villages of Bama County in December 2011, and tested for Blastocystis hominis infection using improved centrifugal sedimentation with hydrochloric acid-ether. Data were analyzed by villages, gender, occupation, age groups and ethnic populations. The results showed that 215 people of 497 were positive, with a prevalence of 43.3% (215/497). Pandang village had the highest infection rate of 55.7% (68/122), significantly higher than the other villages (P<0.05). There was no significant difference in genders, occupations, age groups and ethnic populations (P>0.05).