RESUMO
As an alternative to the use of commercially available, expanded-polystyrene beads, a study was made of the effectiveness of shredded, waste polystyrene (SWAP) for the control of Culex quinquefasciatus. The relevant physical properties of the SWAP were first investigated in the laboratory. Then, under field conditions in wet pit latrines, mosquito emergence rates were measured before and after application of the material. In the laboratory, when compared with the commercial product, the irregular shape of the SWAP particles greatly reduced their capacity to spread over the water surface and the interstitial air spaces also permitted respiration and development of mosquito larvae. Nevertheless, under field conditions, with careful application of the SWAP over the water surfaces in wet pit latrines, almost complete control of mosquito breeding was observed within a few days. This was sustained for 60 days, at which time observation were discontinued. SWAP appears to offer an effective, cheap and readily available alternative to the commercial product for the control of C. quinquefasciatus. The practicality of using it in community-based, mosquito-control programmes warrants further study.(AU)
Assuntos
21003 , Culex , Controle de Mosquitos/métodos , Toaletes , Poliestirenos , Índias OcidentaisAssuntos
Humanos , Adulto , Masculino , Educação em Saúde , Drama , Toaletes , Conhecimentos, Atitudes e Prática em Saúde , Higiene , Saneamento , PrisioneirosRESUMO
About 75 babies in each of three valleys were followed up for two years. The valleys had different levels of water supply and latrine facilities, whereas socio-economic conditions and feeding patterns were similar. Results show that the prevalence of diarrhoea and intestinal helmints reduced as sanitation improved. Ascaris and Tricuris infections dropped 30 and 50 percent respectively after water supplies and latrines were installed. The growth of children was significantly better in the improved areas. The possibility of malnutrition being secondary to illness, rather than primary, is included in the discussion (AU)
Assuntos
Humanos , Lactente , Pré-Escolar , Helmintíase/epidemiologia , Enteropatias Parasitárias/epidemiologia , Toaletes , Abastecimento de Água , Ascaríase/epidemiologia , Estatura , Peso Corporal , Diarreia Infantil/epidemiologia , Diarreia Infantil/etiologia , Helmintíase/etiologia , Enteropatias Parasitárias/etiologia , Distúrbios Nutricionais/etiologia , Saúde da População Rural , Tricuríase/epidemiologia , Santa LúciaRESUMO
The first rural sanitation project was introduced in the parish of Trelawny in the year 1978. As an aided self help project, it provided assistance to householders for the erection of sanitary pit latrines. This study covered the period from May 1979, to June 1981, and aimed at ascertaining the extent to which the services provided by the project were utilized by householders in the parish (AU)
