SummaryCommunity intervention projects with pyrethroid (permethrin and lambdacyhalothrin) impregnated bednets and an accompanying community education programme were carried out in 6 malaria endemic areas on the Pacific coast of Nicaragua, Ecuador, Peru and Colombia as well as in the Peruvian Amazon basin. In this paper the operational aspects are analysed: bednet coverage, results of promotional activities for increased bednet use, the sale of low-cost bednets, techniques and difficulties with impregnation, acceptance of the programme (including washing of impregnated nets), side-effects, residual concentrations of the chemical in the nets, costs of the impregnation programme and insecticide resistance of the malaria vectors.We found that the local manufacture of bednets and their sale through village health workers, even in communities with low cash income, is a viable way of increasing bednet coverage; the impregnation of bednets is well accepted if villagers perceive a direct benefit; pretesting of the soaking capacity of different net materials should be done at central level; the instructions for the impregnation procedures of different net materials (cotton and synthetic) should be simple and unambiguous; very cheap thin net materials should be avoided, particularly in the case of lambdacyhalothrin impregnation; educational methods and/or promotion of dark-colour nets should be further tested in order to decrease the washing frequency of bednets at household level; in areas with early-biting mosquitoes further studies on the protective efficacy of bednets are necessary; careful monitoring of side-effects, particularly those of last-generation pyrethroids, is necessary; and the community-based impregnation programme is a powerful tool for strengthening community involvement in health actions.
A malaria study was undertaken in 98 rural communities of the Pacific coast of Ecuador (n= 14), Colombia ( n = z z ) and Nicaragua (n=62). In-depth interviews on people's knowledge and practice regarding malaria aetiology, symptoms and treatment were conducted and complemented by formal household interviews. On the basis of this information, an educational programme was set up which included the training of village health promoters and community workshops organized by the health workers and used a set of methods of interactive learning. After the baseline survey the communities were paired and randomly allocated to the intervention and control groups. Malaria education took place only in the intervention communities.At the start of the project people's knowledge about malaria-transmitting mosquitoes and malaria symptoms was correct and widespread in those areas where the community exposure to formal health services was pronounced. However, knowledge of the recommended dose of chloroquine was poor everywhere, and self-treatment of malaria episodes deficient.The educational intervention achieved a high level of participant satisfaction which was expressed in a high and continuous attendance rate at the monthly workshops. The knowledge of malaria aetiology and symptoms was 33-61 % better in the intervention group than in the control group. Knowledge of the recommended doses of chloroquine increased significantly (34% in Ecuador, 93% in Colombia but not in Nicaragua) and correct use of chloroquine in the treatment of malaria episodes also improved (26% in Ecuador, 85% in Colombia). In Nicaragua the results were less satisfactory due to the short period of promotional activities and the health services' policy of delivering only supervised treatment to the population. It is concluded that health education should play a major role in malaria control. keywords health education, malaria control, Colombia, Ecuador, Nicaragua correspondence Axel Kroeger,
Studies on the protective efficacy of insecticide-treated materials (ITMs) in Plasmodium vivax endemic areas of Latin America have not yielded sufficient evidence for recommendation of their extensive use in the region. Therefore 2 randomized community trials have been conducted on the Pacific Coast of Nicaragua which analysed the minimum coverage of ITMs needed to be effective against malaria. For the characterization of the study area, epidemiological and entomological baseline surveys and household interview surveys were undertaken. Thereafter the communities were paired (6 pairs in the 1st year and 13 pairs in the 2nd year) according to 4-monthly reported malaria incidence rates, population size and bednet coverage, and then randomly allocated to intervention and control groups. In the intervention groups, bednets were impregnated with lambdacyhalothrin; in the control groups, people received general health education. Anopheles albimanus was found to be the main vector with marked indoor biting behaviour late in the evening. P. vivax (99%) clearly outweighed P. falciparum (1%) with low parasite prevalence rates in the asymptomatic general population (8%) and low parasite densities. The protective efficacy of ITMs varied according to the coverage achieved: protective efficacy was 68% in communities with an average ITM coverage of 50% (10 pairs); 31% in communities with an ITM coverage of 16-30% (4 pairs); and no protective efficacy in communities with ITM coverage below 16% (5 pairs). The comparison with other P. vivax endemic areas in Latin America showed that the vector's late biting behaviour and the indoor preference (where ITMs have a repellent effect) probably led to the favourable results in the study. In malaria endemic areas of Latin America, where P. vivax is predominant, studies on vector behaviour should be conducted in order to predict the impact of ITMs on malaria transmission.
Obesity prevalence is higher among Hispanic children (22.4%) compared with general U.S. children (17%). Children of migrant and seasonal farmworking families are at heightened risk for obesity and related conditions. Limited research, including needs assessments and health promotion programs, has been conducted in Latino migrant farm working communities. Our objective was to identify needs, opportunities, and barriers for designing health promotion programs for children attending a community agency in a small Midwestern town. As part of a community-based participatory research project, a needs assessment was undertaken with 38 children aged 5 to 12 years (74% Latino). Measures included demographics, dietary patterns, physical activity (PA), and anthropometrics. The study was approved by the university’s institutional review board and written parental consent, and child assent, was obtained. More than half of the sample had overweight (29%) or obesity (26%); 31% had elevated blood pressure levels. Participants did not meet the U.S. Department of Agriculture recommendations for most food groups and nutrients; 13% fell into the “poor” and 87% into the “needs improvement” category based on Healthy Eating Index scores. PA levels were low; only 34% of respondents engaged in sufficient exercise. Findings indicate the need for programs promoting improvements in dietary intake and increased PA.
Este estudio permitió la sistematización y verificación efectiva, de la problemática y potencialidades de las microcuencas del rio el Salto y el Cristal para buscar soluciones sostenibles. El objetivo fue caracterizar socioeconómica y ambientalmente los sistemas de producción de las microcuencas del rio Cristal y el Salto de las provincias Bolívar y de Los Ríos en Ecuador. Se usó la metodología del paradigma de investigación socio-crítico, fundamentado en la ciencia de investigación–acción. Se usaron estrategias metodológicas de investigación-acción participativa. Los Resultados obtenidos fue la caracterización socioeconómica y ambiental de los sistemas de producción. Las microcuencas de los ríos Cristal y El Salto, se recopiló la información de 68 familias, luego se analizó y se sistematizó la información que permitió caracterizar los sistemas de producción. Para el análisis de cuencas hidrográficas se requiere de una extensa información de cartografía digitalizada misma que es muy limitada en zonas de alta nubosidad.
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