schistosomiasis in newly reclaimed areas in egypt. 1-distribution and population seasonal fluctuation of intermediate host snails. | two newly reclaimed areas located west & east of suez canal, namely el manayef area and el morra area, were studied for patterns of distribution and population seasonal fluctuation of biomphalaria alexandrina and bulinus truncatus, the intermediate host snails of schistosoma mansoni and s. haematobium, respectively. in this study geographic information system (gis) techniques were utilized for producing maps and analyzing the results. habitats of the two vector snail species were categorized int ... | 1998 | 9914712 |