Mostrando 15,781 - 15,800 Resultados de 16,443 Para Buscar '"South Africa"', tiempo de consulta: 0.45s Limitar resultados
  1. 15781
    “…BACKGROUND: New SARS-CoV-2 variants with increased transmissibility, like B.1.1.7, first detected in England or B.1.351, first detected in South Africa, have caused considerable concern worldwide. …”
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  2. 15782
    “…METHODS: We used a Bayesian model to reconstruct age-specific HIV incidence from repeated observations of individuals' HIV serostatus and survival collected among population HIV cohorts in rural Malawi, South Africa, Tanzania, Uganda, and Zimbabwe, in a collaborative analysis of the ALPHA network. …”
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  3. 15783
    “…METHODS: we employed General House Survey (GHS) data released by Statistics South Africa (Stats SA) in December 2015 with a response rate was 90.5%. …”
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  4. 15784
    “…We show that ES can provide an early warning of VOCs becoming prevalent in the population and that, as well as B.1.1.7, our method can detect VOCs B.1.351 and P.1, first identified in South Africa and Brazil, respectively, and other viruses carrying critical spike mutation E484K, known to have an effect on virus antigenicity. …”
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  5. 15785
  6. 15786
    “…Arundo donax, Cortaderia selloana and Phragmites australis are high-biomass-producing perennial Poalean species that grow abundantly and spontaneously in warm temperate regions, such as in Mediterranean-type climates, like those of Southern Europe, Western United States coastal areas, or in regions of South America, South Africa and Australia. Given their vigorous and spontaneous growth, biomass from the studied grasses often accumulates excessively in unmanaged agro-forestry areas. …”
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  7. 15787
  8. 15788
  9. 15789
    “…Countries in our study set with primary caregiver death rates of at least one per 1000 children included Peru (10·2 per 1000 children), South Africa (5·1), Mexico (3·5), Brazil (2·4), Colombia (2·3), Iran (1·7), the USA (1·5), Argentina (1·1), and Russia (1·0). …”
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  10. 15790
  11. 15791
    “…Urine lipoarabinomannan (LAM) has shown promise in the point-of-care detection of TB in this patient subset but lacks sensitivity, and its exact role in a diagnostic algorithm for TB in South Africa remains to be clarified. OBJECTIVES: The objective of this study was to better define the patient profile and the TB characteristics associated with a positive urine LAM (LAM+ve) test. …”
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  12. 15792
    “…Objective: To identify and characterize possible genetic variants of the SLC5A5 gene in women of African descent living in urban South Africa, and to study associations with breast milk iodine concentrations (BMIC) in lactating women. …”
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  13. 15793
    “…BACKGROUND: Post-apartheid, South Africa adopted an inclusive education system that was intended to be free of unfair discrimination. …”
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  14. 15794
    “…SETTING: Participants represented public and private hospitals in 14 countries, in different phases of the first wave of the pandemic: Australia, Argentina, Canada, India, Italy, Japan, Nigeria, Singapore, Spain, South Africa, Switzerland, Turkey, UK and USA. PARTICIPANTS: From 22 invited sarcoma surgeons, 18 surgeons participated. …”
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  15. 15795
    “…METHODS: A national reference laboratory in South Africa was granted funding for setting up the MSB; it possessed experienced staff and suitable resources. …”
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  16. 15796
    “…IPV justification was 45.8%, with the highest and lowest prevalence in Mali (80.9%) and South Africa (4.6%) respectively. Women who were exposed to interparental violence were more likely to justify IPV compared to those who were not exposed [aOR = 1.53, 95% CI = 1.47–1.59]. …”
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  17. 15797
    “…RSV disease manifestations in children range from mild upper respiratory tract infections to severe lower respiratory tract infections, including pneumonia and bronchiolitis. In South Africa, the seasonality of RSV disease causing both upper and lower respiratory tract illness is well documented. …”
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  18. 15798
    “…We also show that these severe structural changes upon electric-field application also occur in the mutant RBDs corresponding to the variants of concern (VOC) B.1.1.7 (UK), B.1.351 (South Africa) and P.1 (Brazil). Remarkably, while the structural flexibility of S allows the virus to improve its probability of entering the cell, it is also the origin of the surprising vulnerability of S upon application of electric fields of strengths at least two orders of magnitude smaller than those required for damaging most proteins. …”
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  19. 15799
    “…SETTING: Agincourt subdistrict of Mpumalanga province, South Africa. PARTICIPANTS: 4455 individuals (54.7% female), aged ≥40 years (median age 61 years, IQR 52–71) and resident in the study area. …”
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  20. 15800
    “…We identified seven institutions—in South Africa, Egypt and Uganda—as central to the collaboration networks between 2008 and 2019, all of whom showed a tendency to collaborate across sectors. …”
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