References
- Anderson, R. M. & May, R. M. (1985). Helminth infec-tions of humans: mathematical models, population dynamics and control. Advances in Parasitology, 24, 1-10 1.
- Asaolu, S. O., Ofoezie, I. E., Odumuyiwa, P. A., Sowemimo, O. A., Ogunniyi, T. A. B. (2002). Effect of water supply and sanitation on the prevalence and intensity of Ascaris lumbricoides among pre-school-age children in Ajebandele and Ifewara, Osun state, Nigeria. Transactions of the Royal Society of Tropical Medicine and Hygiene, 96, 600–604.
- Briscoe, J. (1977). The Role of Water Supply in Improving Health in Poor Countries (with Special Reference to Bangladesh). Scientific Report No. 6. Dacca, Bangladesh: Cholera Research Laboratory.
- Bundy, D. A. P., Hall, A., Medley, G. F. & Savioli, L. (1992). Evaluating measures to control intestinal parasitic infections. World Health Statistics Quarterly, 45, 168–179.
- De Silva, N. R., Jayapani, V. P. P. & de Silva, H. J. (1996). Socioeconomic and behavioural factors affecting the prevalence of geohelminths in pre-school children. Southeast Asian Journal of Tropical Medicine and Public Health, 27, 36–42.
- Feachem, R. G., Guy, M. W., Harrison, S., Iwugo, K. O., Marshall, T., Mbere, N., Muller, R. & Wright, A. M. (1983). Excreta disposal facilities and intestinal parasitism in urban Africa: preliminary studies in Botswana, Ghana and Zambia. Transactions of the Royal Society of Tropical Medicine and Hygiene, 77, 515–521.
- Ismail, M. M., Rajapakse, A. L., Suraweera, M. G. W., Weerasuriya, K. & Amarasinghe, D. K. C. (1989). Some socio-economic and health related factors and soil-transmitted nematode infection: 1. Relationship to prevalence and intensity of infection. In Collected Papers on the Control of Soil-transmitted Helminthiases, Volume 4, pp. 23-38. Tokyo: Asian Parasitic Control Organization.
- Kan, S. P., Chen, S. T., Chiam, H. K. & Ng, P. T. (1993). Environmental and socioeconomic factors affecting distribution of soil-transmitted helmin-thiases among pre-school children in Malaysia. In Collected Papers on the Control of Soil-transmitted Helminthiases, Volume 5, pp. 98-105. Tokyo: Asian Parasitic Control Organization.
- Katz, M., Chares, A. & Pellegrino, J. (1972). A simple device for quantitative stool thick smear technique in Schistosoma mansoni. Revista do Institut° de Medicina Tropical de Scio Paulo, 14, 397–400.
- Koopman, J. S. (1981). Food, sanitation and socio-economic determinants of child growth in Colombia. American Journal of Public Health, 71, 31–37.
- Shiffman, M. A. (1978). Field studies on water, sanita-tion and health education in relation to health status in Central America. Progress in Water Technology, 11, 143–150.
- Sorensen, E., Ismail, M., Amarasinghe, D. K. C., Hettiarachchi, I. & Dassenaieke, T. S. (1994). The effect of the availability of latrines on soil-transmitted nematode infections in the plantation sector in Sri Lanka. American Journal of Tropical Medicine and Hygiene, 51, 36–39.
- Sorensen, E., Ismail, M., Amarasinghe, D. K. C., Hettiarachchi, I. & Dassenaieke, T. S. (1996). Prevalence and control of soil transmitted nematode infections among children and women in the plantations in Sri Lanka. Ceylon Medical Journal, 41, 37–41.
- Suzuki, R. & Sanbe, T. (1977). Evaluation of Katz's quantitative method and its improvement. Japan Journal of Parasitology, 26 (Suppl.), 35–37.
- World Health Organization (1981). Intestinal Protozoan and Helminthic Infections: Report of a WHO Scientific Group. Technical Report Series No. 666. Geneva: WHO.
- World Health Organization (1987). Intestinal Helmin-thiases: Report of a WHO Scientific Group. Technical Report Series No. 749. Geneva: WHO.
- World Health Organization (1991). Basic Laboratory Methods in Medical Parasitology. Geneva: WHO.
- World Health Organization (2002). Prevention and Control of Schistosomiasis and Soil-transmitted Helmin-thiasis: Report of a WHO Expert Committee. Technical Report Series No. 912. Geneva: WHO.