• Albonico M, Wright V, Ramsan M et al. (2005) Development of the egg hatch assay for detection of antihelminthic resistance in human hookworms. International Journal for Parasitology 35, 803811.
  • Anderson TJC, Zizza CA, Leche GM, Scott ME & Solomons NW (1993) The distribution of intestinal helminth infections in a rural village in Guatemala. Memorias do Instituto Oswaldo Cruz 88, 5365.
  • Asaolu SO & Ofoezie IE (2003) The role of health education and sanitation in the control of helminth infections. Acta Tropica 86, 283294.
  • Bennett A, Guyatt H & Wellcome Trust Centre for the Epidemiology of Infectious Disease (WTCEID), University of Oxford (2000) Reducing intestinal nematode infection: efficacy of Albendazole and Mebendazole. Parasitology Today 16, 7174.
  • Bethony J, Brooker S, Albonico M et al. (2006) Soil-transmitted helminth infections: ascariasis, trichuriasis, and hookworm. The Lancet 367, 15211532.
  • Esrey SA, Potash JB, Roberts L & Shiff C (1991) Effects of improved water supply and sanitation on ascariasis, diarrhoea, dracunculiasis, hookworm infection, schistosomiasis, and trachoma. Bulletin of the World Health Organization 69, 609621.
  • Feachem RG, Bradley DJ, Garelick H & Mara DD (1983) Sanitation and disease: health aspects of excreta and wastewater management. World Bank Studies in Water Supply and Sanitation 3. John Wiley and Sons, Inc., Chichester.
  • Fewtrell L, Kaufman RB, Kay D, Enanoria W, Haller L & Colford JM (2005) Water, sanitation, and hygiene interventions to reduce diarrhoea in less developed countries: a systemic review and meta-analysis. The Lancet Infectious Diseases 5, 4252.
  • Geertz S & Gryseels B (2000) Drug resistance in human helminths: current situation and lessons from livestock. Clinical Microbiology Reviews 13, 207222.
  • Gupta RS, Meena VR & Bora D (2003) Soil-transmitted intestinal helminthes infections in urban and rural areas of Alwar District, Rajasthan, India. Journal of Communicable Diseases 35, 306309.
  • Henry FJ (1981) Environmental sanitation infection and nutritional status of infants in rural St. Lucia, West Indies. Transactions of the Royal Society of Tropical Medicine and Hygiene 75, 507513.
  • Hotez PJ, Brooker S, Bethony JM, Bottazzi ME, Loukas A & Xiao S (2004) Hookworm infection (review article). New England Journal of Medicine 351, 799807.
  • Humphries DL, Stephenson LS, Pearce EJ, The PH, Dan HT & Khanh LT (1997) The use of human faeces for fertilizer is associated with increased intensity of hookworm infection in Vietnamese women. Transactions of the Royal Society of Tropical Medicine and Hygiene 91, 518520.
  • Mabaso MLH, Appleton CC, Hughes JC & Gouws E (2003) The effect of soil type and climate on hookworm (Necator americanus) distribution in KwaZulu-Natal, South Africa. Tropical Medicine and International Health 8, 722727.
  • Ministry of Health of El Salvador (1998) Coberturas de Saneamiento Según ANDA Para 1998. MOH records, El Salvador.
  • Moe CL & Izurieta R (2003) Longitudinal study of double vault urine diverting toilets and solar toilets in El Salvador. Proceedings of the Second International Symposium on Ecological Sanitation, 7–11 April 2003, Lubeck, Germany (Peer-Reviewed Section), 295302.
  • Moe CL, Izurieta R, Cohen LF & Esrey SA (2001) Microbiological Studies of Ecological Sanitation in El Salvador. First International Conference on Ecological Sanitation, Nanning, China.
  • Moraes LRS & Cairncross S (2004) Environmental interventions and the pattern of geohelminth infections in Salvador, Brazil. Parasitology 129, 223232.
  • Moraes LRS, Cancio JA & Cairncross S (2004) Impact of drainage and sewerage on intestinal nematode infections in poor urban areas in Salvador, Brazil. Transactions of the Royal Society of Tropical Medicine and Hygiene 98, 197204.
  • Olsen A, Permin A & Roepstorff A (2001) Chickens and pigs as transport hosts for Ascaris, Trichuris and Oesophagostomum eggs. Parasitology 123, 325330.
  • Pan American Health Organization (PAHO) (1997) Communicable Diseases: Control of Intestinal Parasitosis. Available at: Accessed 16 August 2005.
  • Schönning C & Stenström TA (2004) Guidelines for the Safe Use of Urine and Faeces in Ecological Sanitation Systems. EcoSanRes Publication Series Report 2004–1: Stockholm Environment Institute, Stockholm.
  • Smith HM, DeKaminsky RG, Niwas S & Soto RJ (2001) Prevalence and intensity of infections of Ascaris lumbricoides and Trichuris trichiura and associated socio-demographic variables in four rural Honduran communities. Memorias do Instituto Oswaldo Cruz 96, 303314.
  • Traub RJ, Robertson ID, Irwin P, Mencke N & Andrew Thompson RC (2004) The prevalence, intensities and risk factors associated with geohelminth infection in tea-growing communities of Assam, India. Tropical Medicine and International Health 9, 688701.
  • UNICEF & WHO (2004) Meeting the MDG Water and Sanitation Target: Midterm Assessment of Progress. UNICEF/WHO, Geneva Switzerland.
  • WHO (2001) Infectious Diseases Home Page, Intestinal Parasites. Available at: Accessed 17 November 2001.
  • World Bank (1993) World Development Report: Investing in Health. Oxford University Press, New York, NY.