| evaluation of a sanitation programme using eggs of ascaris lumbricoides in household yard soils as indicators. | soil samples were analysed for the presence of ascaris lumbricoides eggs as indicators of environmental pollution in household yards in maputo, mozambique, with the objective of evaluating the impact of a programme for the promotion of improved latrine construction. the locations for soil sample collection were defined by a random grid on which household activities were mapped. in addition, parasitological examinations were carried out amongst household residents. no significant difference was f ... | 1989 | 2918573 |