The effect of season and wastewater storage on the risk of Ascaris lumbricoides infection
and diarrhoeal disease associated with wastewater reuse was studied in Mexico in 1991 …

A longitudinal study of Ascaris lumbricoides reinfection over a 9-10 month period was
carried out in a wastewater irrigated fanning region in Central Mexico (September 1989-May …

Wastewater from Mexico city is used to irrigate over 85 000 hectares, mainly of fodder and
cereal crops in the Mezquital Valley. A cross-sectional study method is being used to test the …

9,435 individuals participated in a cross-sectional survey in the irrigation districts of the
Mezquital Valley (central Mexico). Exposure groups were: 848 households irrigating with …

A cross-sectional survey was carried out in the irrigation districts of central Mexico, in which
9435 individuals participated. The health outcomes included diarrhoeal diseases and …

The food and water hygiene in two Liberian communities was studied in a house-to-house
diarrhoea survey. The level of contamination with enterobacteria of drinking water stored in …

This study assessed the risk factors for Giardia intestinalis infection in an agricultural
population in Mexico. Exposure groups included 2,257 individuals from households …

A case-control study of risk factors for child diarrhoeal disease was undertaken in a rural
area of Nicaragua. Some 1229 children under the age of five were matched with an equal …

The relationships between intestinal parasitism and excreta disposal technologies in
Gaborone (Botswana), Ndola (Zambia) and Kumasi (Ghana) were investigated. Parasitic …

The dominant intestinal helminths in the Iranian villages of Kargar Malleh (hookworms),
Bandar Abbas (hookworms) and Jazin (Ascaris lumbricoides and Trichuris trichiura), were …