| intestinal parasites of school children in urban and rural areas of eastern nigeria. | from october 1975 to march 1976 an epidemiological survey was carried out in anambra and imo states of nigeria to determine the rate of intestinal worm and protozoan infections in school children. a total of 1742 children, out of which 813 from the urban and 929 from the rural school were screened of intestinal helminths and 1699 were also examined for intestinal protozoan infections. concentration methods hcl-ether centrifugation technique and heidenhain's iron-hematoxylin staining method respe ... | 1978 | 735552 |