| epidemiology of giardia lamblia infection in children: cross-sectional and longitudinal studies in urban and rural communities in zimbabwe. | stool specimens from 3,038 children in rural and urban areas near harare were examined for giardia lamblia cysts. preliminary studies, using specimens collected on three consecutive days from 157 known cyst passers, showed that over 89% of infections could be diagnosed on single stool specimens by examination of gomori-stained smears. the overall prevalence of giardial infection was 19.4% with significantly more urban children (21.1%) passing cysts than rural children (16.7%). in urban areas the ... | 1987 | 3661826 |