Mostrando 681 - 700 Resultados de 56,683 Para Buscar '"áfrica"', tiempo de consulta: 0.28s Limitar resultados
  1. 681
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  5. 685
    por Arah, Onyebuchi A
    Publicado 2007
    “…This is particularly true for Africa. The perceived magnitude of such migration for each source country might, however, depend on the choice of metrics used in the analysis. …”
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  6. 686
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  8. 688
    “…None of these studies, however, have focused on fungal biodiversity in South Africa. Coinciding with the 100th anniversary of the National Collection of Fungi (PREM) in South Africa in 2005, it is thus timely to reflect on the taxonomic research that has been conducted in South Africa over the past Century. …”
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  9. 689
    “…METHODOLOGY/PRINCIPAL FINDING: Here we apply a mathematical model to clinical data from eight endemic regions in sub-Saharan Africa. The model provides a quantitative framework within which differences in age distribution of clinical disease are assessed in terms of the parameters underlying transmission. …”
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  10. 690
  11. 691
    por Schofield, Chris J, Kabayo, John P
    Publicado 2008
    “…Vectors of trypanosomiasis – tsetse (Glossinidae) in Africa, kissing-bugs (Triatominae) in Latin America – are very different insects but share demographic characteristics that render them highly vulnerable to available control methods. …”
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  12. 692
    “…BACKGROUND: Female strangulation in South Africa occurs in a context of pervasive and often extreme violence perpetrated against women, and therefore represents a major public health, social and human rights concern. …”
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  13. 693
    “…Multidrug-resistant tuberculosis (MDR TB) in Africa may be more prevalent than previously appreciated. …”
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  14. 694
    “…BACKGROUND: Lassa fever is caused by a viral haemorrhagic arenavirus that affects two to three million people in West Africa, causing a mortality of between 5,000 and 10,000 each year. …”
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  15. 695
    “…OBJECTIVES: To identify factors associated with sexual debut and early age at first sex (AFS) among young men and women (12–25 years) in a population with a high prevalence and incidence of HIV in rural South Africa. METHODS: Longitudinal data from four rounds (2003–7) of a prospective population-based HIV and sexual behaviour survey in rural KwaZulu-Natal were used to investigate the distribution and predictors of earlier first sex. …”
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  16. 696
    “…Visceral leishmaniasis (VL) is among the most neglected of the tropical diseases, afflicting the poorest of the poor. In eastern Africa, VL causes at least 4000 deaths annually, a loss of approximately 385 000 disability-adjusted life years. …”
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    “…We describe the epidemiology of invasive meningococcal disease in South Africa from August 1999 through July 2002, as reported to a laboratory-based surveillance system. …”
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