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Migrant labor and sexually transmitted disease: AIDS in Africa 总被引:3,自引:0,他引:3
C W Hunt 《Journal of health and social behavior》1989,30(4):353-373
Acquired immune deficiency syndrome (AIDS) is worldwide, but the clinical and epidemiological pattern of the disease in Africa is different from that in developed areas. "Type 1 AIDS" occurs in industrialized North America and Europe; it has a distinctive sex ratio (16:1) and risk pattern of IV drug use and sexual practices. "Type 2 AIDS" occurs in Third World countries, particularly in eastern, southern, and central Africa. It is characterized by an entirely different sex ratio (1:1) and by distinctively different risk patterns. Both epidemics are caused by the HIV-1 virus. The key concept for understanding the origins of the differences between Type 1 and Type 2 AIDS is the migratory labor system in eastern, central, and southern Africa. This system causes long absences, increased family breakdown, and increased numbers of sexual partners. Historically the organization of this labor market has created a population which suffers from epidemics of sexually transmitted diseases. These historical patterns are presented as evidence for the contemporary transmission of AIDS. When contemporary AIDS and HIV-1 seropositivity prevalence data are examined, a systematic temporal and geographic pattern emerges for the AIDS epidemic in Africa. Despite a paucity of good data, the prevalence data from eastern, central, and southern Africa support the thesis of migrant labor's role in the transmission of AIDS. 相似文献
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Diana Hunt 《Development policy review : the journal of the Overseas Development Institute》2004,22(2):173-191
Empirical studies of land rights privatisation have tended to underemphasise the unintended impacts of land rights reform relative to establishing whether the predicted impacts have occurred. This article, in reviewing some of the unintended consequences of the 1998 Uganda Land Act, draws attention to ways in which intended impacts may be undercut by lack of both consultation and foresight in anticipating responses to new legal provisions and by lack of adequate resourcing of the reform process. It also recognises that unintended outcomes may sometimes reflect appropriate adaptations of legal provisions at the local level, and briefly considers what light the Ugandan experience can throw on recent proposals for Normalisation of informal property rights in the Third World. 相似文献
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John R. Fairweather Lesley M. Hunt Chris J. Rosin Hugh R. Campbell 《Rural sociology》2009,74(3):430-454
Abstract Within the political economy of agriculture and agrofood literatures there are examples of approaches that reject simple dichotomies between alternatives and the mainstream. In line with such approaches, we challenge the assumption that alternative agriculture, and its attendant improved environmental practices, alternative management styles, less intensive approaches, and better approaches to animal and ecosystem welfare, is the only source of agricultural sustainability. This article uses national farm‐survey results for New Zealand's sheep and beef, dairy, and horticulture sectors to examine conventional farmers, measure their assessments of farming practices, and assess their environmental orientation. Analysis identifies a proenvironmental cluster of farmers in each sector characterized by a higher environmental‐orientation score and distinct ratings of other farm practices queried in the survey. We interpret the results in terms of the exposure of different agricultural sectors to the effects of market‐based, audited, best‐practice schemes. The presence of shades of “greenness” among conventional farmers has important implications for environmental management and for our understanding of the various and complex pathways toward the greening of agrofood systems. 相似文献
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《呼啸山庄》
[英] 艾米莉 · 勃朗特
出生自英国约克郡牧师家庭的艾米莉·勃朗特,尽管过着家徒四壁的生活,仍抵挡不住脑海里丰沛的创作能量,她的著作《呼啸山庄》(Wuthering Heights)成为十九世纪经典文学之一,影响后人极深.艾米莉·勃朗特的个性内向,据说除了家人之外没有其他的朋友,她认为失眠是她的想象来源... 相似文献
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Ipsilateral breast tumor relapse (IBTR) often occurs in breast cancer patients after their breast conservation therapy. The IBTR status' classification (true local recurrence versus new ipsilateral primary tumor) is subject to error and there is no widely accepted gold standard. Time to IBTR is likely informative for IBTR classification because new primary tumor tends to have a longer mean time to IBTR and is associated with improved survival as compared with the true local recurrence tumor. Moreover, some patients may die from breast cancer or other causes in a competing risk scenario during the follow-up period. Because the time to death can be correlated to the unobserved true IBTR status and time to IBTR (if relapse occurs), this terminal mechanism is non-ignorable. In this paper, we propose a unified framework that addresses these issues simultaneously by modeling the misclassified binary outcome without a gold standard and the correlated time to IBTR, subject to dependent competing terminal events. We evaluate the proposed framework by a simulation study and apply it to a real data set consisting of 4477 breast cancer patients. The adaptive Gaussian quadrature tools in SAS procedure NLMIXED can be conveniently used to fit the proposed model. We expect to see broad applications of our model in other studies with a similar data structure. 相似文献