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https://www.readbyqxmd.com/read/27914203/multiple-processes-drive-genetic-structure-of-humpback-whale-megaptera-novaeangliae-populations-across-spatial-scales
#1
Francine Kershaw, Inês Carvalho, Jacqueline Loo, Cristina Pomilla, Peter B Best, Ken P Findlay, Salvatore Cerchio, Tim Collins, Marcia H Engel, Gianna Minton, Peter Ersts, Jaco Barendse, P G H Kotze, Yvette Razafindrakoto, Solange Ngouessono, Michael Meÿer, Meredith Thorton, Howard C Rosenbaum
Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale (Megaptera novaeangliae) populations display complex genetic structures that have not been fully resolved at all spatial scales. We generated a data set of nuclear markers for 3,575 samples spanning the seven breeding stocks and substocks found in the South Atlantic and western and northern Indian Oceans. For the total sample, and males and females separately, we assessed genetic diversity, tested for genetic differentiation between putative populations and isolation by distance, estimated the number of genetic clusters without a priori population information, and estimated rates of gene flow using maximum likelihood and Bayesian approaches...
December 3, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27914191/beyond-the-checklist-understanding-rural-health-vulnerability-in-a-south-african-context
#2
Richard Vergunst, Leslie Swartz, Gubela Mji, Janis Kritzinger, Stine Hellum Braathen
BACKGROUND: Vulnerability in the past has sometimes been measured and understood in terms of checklists or common understanding. It is argued here that vulnerability is a more complex issue than this. Although checklists of vulnerable groups are important, they do not capture the essence and dynamics of vulnerability. OBJECTIVE: The case of rural health vulnerability in South Africa is discussed to show that classifying people into vulnerable groups does not portray the complexity and intricacies of what it means to have vulnerability...
2016: Global Health Action
https://www.readbyqxmd.com/read/27913911/assessing-the-food-safety-attitudes-and-awareness-of-managers-of-school-feeding-programmes-in-mpumalanga-south-africa
#3
J J Sibanyoni, F T Tabit
The managers of school feeding programmes are responsible for ensuring the safety of the food which is provided to schoolchildren, but very few studies have been conducted on the food safety knowledge and awareness of these managers. The objective of this study is to evaluate the food safety attitudes and awareness of managers of the National School Nutrition Programme (NSNP) in schools in Mpumalanga, a province of South Africa. A cross-sectional survey study was conducted in which questionnaires were used to collect data from 300 NSNP food service managers...
December 2, 2016: Journal of Community Health
https://www.readbyqxmd.com/read/27913878/piroplasms-in-brown-hyaenas-parahyaena-brunnea-and-spotted-hyaenas-crocuta-crocuta-in-namibia-and-south-africa-are-closely-related-to-babesia-lengau
#4
Richard E J Burroughs, Barend L Penzhorn, Ingrid Wiesel, Nancy Barker, Ilse Vorster, Marinda C Oosthuizen
The objective of our study was identification and molecular characterization of piroplasms and rickettsias occurring in brown (Parahyaena brunnea) and spotted hyaenas (Crocuta crocuta) from various localities in Namibia and South Africa. Whole blood (n = 59) and skin (n = 3) specimens from brown (n = 15) and spotted hyaenas (n = 47) were screened for the presence of Babesia, Theileria, Ehrlichia and Anaplasma species using the reverse line blot (RLB) hybridization technique. PCR products of 52/62 (83...
December 2, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27912747/the-three-dimensional-kinematics-and-spatiotemporal-parameters-of-gait-in-6-10-year-old-typically-developed-children-in-the-cape-metropole-of-south-africa-a-pilot-study
#5
Yvonne Smith, Quinette Louw, Yolandi Brink
BACKGROUND: Functional gait is an integral part of life, allowing individuals to function within their environment and participate in activities of daily living. Gait assessment forms an essential part of a physical examination and can help screen for physical impairments. No three-dimensional (3D) gait analysis studies of children have been conducted in South Africa. South African gait analysis laboratory protocols and procedures may differ from laboratories in other countries, therefore a South African data base of normative values is required to make a valid assessment of South African children's gait...
December 3, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27911487/external-inspection-of-compliance-with-standards-for-improved-healthcare-outcomes
#6
REVIEW
Gerd Flodgren, Daniela C Gonçalves-Bradley, Marie-Pascale Pomey
BACKGROUND: Inspection systems are used in healthcare to promote quality improvements (i.e. to achieve changes in organisational structures or processes, healthcare provider behaviour and patient outcomes). These systems are based on the assumption that externally promoted adherence to evidence-based standards (through inspection/assessment) will result in higher quality of healthcare. However, the benefits of external inspection in terms of organisational-, provider- and patient-level outcomes are not clear...
December 2, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27909937/exploring-the-migration-profiles-of-primary-healthcare-users-in-south-africa
#7
Jo Vearey, Thea de Gruchy, Mphatso Kamndaya, Helen L Walls, Candice M Chetty-Makkan, Johanna Hanefeld
South Africa's public healthcare system responses seldom engage with migration. Our exploratory study investigates migration profiles and experiences of primary healthcare (PHC) users. A cross-sectional survey involving non-probability sampling was conducted with 229 PHC users at six purposively selected PHC clinics in three districts of SA. The survey captured socio-demographic information, migration histories, and PHC experiences. Chi square and Fischer's exact tests were used to compare categorical variables, whilst Mann-Whitney U tests compared continuous variables between groups...
December 1, 2016: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/27908867/south-africa-begins-first-hiv-vaccine-trial-in-seven-years
#8
Owen Dyer
No abstract text is available yet for this article.
December 1, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27907107/a-time-calibrated-mitogenome-phylogeny-of-catfish-teleostei-siluriformes
#9
Ilias Kappas, Spiros Vittas, Chrysoula N Pantzartzi, Elena Drosopoulou, Zacharias G Scouras
A very significant part of the world's freshwater ichthyofauna is represented by ancient, exceptionally diverse and cosmopolitan ray-finned teleosts of the order Siluriformes. Over the years, catfish have been established as an exemplary model for probing historical biogeography at various scales. Yet, several tantalizing gaps still exist in their phylogenetic history, timeline and mode of diversification. Here, we re-examine the phylogeny of catfish by assembling and analyzing almost all publicly available mitogenome data...
2016: PloS One
https://www.readbyqxmd.com/read/27907009/moderate-levels-of-pre-treatment-hiv-1-antiretroviral-drug-resistance-detected-in-the-first-south-african-national-survey
#10
Kim Steegen, Sergio Carmona, Michelle Bronze, Maria A Papathanasopoulos, Gert van Zyl, Dominique Goedhals, William MacLeod, Ian Sanne, Wendy S Stevens
BACKGROUND: In order to assess the level of transmitted and/or pre-treatment antiretroviral drug resistance to HIV-1, the World Health Organization (WHO) recommends that regular surveys are conducted. This study's objective was to assess the frequency of HIV-1 antiretroviral drug resistance in patients initiating antiretroviral treatment (ART) in the public sector throughout South Africa. METHODS: A prospective cross-sectional survey was conducted using probability proportional to size sampling...
2016: PloS One
https://www.readbyqxmd.com/read/27906986/cost-effectiveness-of-community-based-tb-hiv-screening-and-linkage-to-care-in-rural-south-africa
#11
Jennifer A Gilbert, Sheela V Shenoi, Anthony P Moll, Gerald H Friedland, A David Paltiel, Alison P Galvani
South Africa has one of the highest burdens of TB worldwide, driven by the country's widespread prevalence of HIV, and further complicated by drug resistance. Active case finding within the community, particularly in rural areas where healthcare access is limited, can significantly improve diagnosis and treatment coverage in high-incidence settings. We evaluated the potential health and economic consequences of implementing community-based TB/HIV screening and linkage to care. Using a dynamic model of TB and HIV transmission over a time horizon of 10 years, we compared status quo TB/HIV control to community-based TB/HIV screening at frequencies of once every two years, one year, and six months...
2016: PloS One
https://www.readbyqxmd.com/read/27906910/progress-with-scale-up-of-hiv-viral-load-monitoring-seven-sub-saharan-african-countries-january-2015-june-2016
#12
Shirley Lecher, Jason Williams, Peter N Fonjungo, Andrea A Kim, Dennis Ellenberger, Guoqing Zhang, Christiane Adje Toure, Simon Agolory, Georgette Appiah-Pippim, Suzanne Beard, Marie Yolande Borget, Sergio Carmona, Geoffrey Chipungu, Karidia Diallo, Marie Downer, Dianna Edgil, Holly Haberman, Mackenzie Hurlston, Steven Jadzak, Charles Kiyaga, William MacLeod, Boniface Makumb, Hellen Muttai, Christina Mwangi, Jane W Mwangi, Michael Mwasekaga, Mary Naluguza, Lucy W Ng'Ang'A, Shon Nguyen, Souleymane Sawadogo, Katrina Sleeman, Wendy Stevens, Joel Kuritsky, Shannon Hader, John Nkengasong
The World Health Organization (WHO) recommends viral load testing as the preferred method for monitoring the clinical response of patients with human immunodeficiency virus (HIV) infection to antiretroviral therapy (ART) (1). Viral load monitoring of patients on ART helps ensure early diagnosis and confirmation of ART failure and enables clinicians to take an appropriate course of action for patient management. When viral suppression is achieved and maintained, HIV transmission is substantially decreased, as is HIV-associated morbidity and mortality (2)...
December 2, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27906789/radon-and-thoron-in-air-occupational-exposure-study-within-selected-wine-cellars-of-the-western-cape-south-africa-and-associated-annual-effective-doses
#13
R Botha, R T Newman, R Lindsay, P P Maleka
This is the first known study of exposure of Rn (radon) and secondarily Rn (thoron) in-air activity concentrations assessed within nine selected wine cellars in four wine districts of the Western Cape (South Africa) and the associated annual occupational effective doses. E-PERM electret ion chambers (EIC) and RAD-7 α-detectors were used to perform these measurements. The radon in-air levels ranged from 12 ± 4 Bq m to 770 ± 40 Bq m within the nine selected wine cellars. Eight of the nine wine cellars (excluding results from cellar w-6) had a median radon in-air activity concentration of 48 ± 8 Bq m...
January 2017: Health Physics
https://www.readbyqxmd.com/read/27906030/cases-of-antiretroviral-associated-gynaecomastia-reported-to-the-national-hiv-tuberculosis-health-care-worker-hotline-in-south-africa
#14
Christine Njuguna, Annoesjka Swart, Marc Blockman, Gary Maartens, Briony Chisholm, Annemie Stewart, Anri Uys, Karen Cohen
BACKGROUND: Gynaecomastia is associated with exposure to antiretroviral therapy (ART), in particular efavirenz. There is limited data on clinical characteristics of patients with ART-associated gynaecomastia in resource-limited settings and little guidance on the optimal management of this adverse drug reaction (ADR). We describe the clinical characteristics, management and outcomes of gynaecomastia cases reported to the National HIV & Tuberculosis Health Care Worker Hotline in South Africa...
November 16, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905986/predictors-of-perceived-male-partner-concurrency-among-women-at-risk-for-hiv-and-sti-acquisition-in-durban-south-africa
#15
Zakir Gaffoor, Handan Wand, Renée A Street, Nathlee Abbai, Gita Ramjee
BACKGROUND: Women in sub-Saharan Africa continue to be at greater risk for HIV acquisition than men. Concurrency, viz. multiple sexual partnerships that overlap over time, has been studied as a possible risk factor for HIV transmission. The aim of this study was to identify predictors of perceived male partner concurrency among sexually active, HIV negative women. METHODS: Socio-demographic and behavioural data from women enrolled in a biomedical HIV prevention clinical trial were assessed in relation to perceived male partner concurrency using the Chi squared test...
March 8, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905943/social-patterns-and-differentials-in-the-fertility-transition-in-the-context-of-hiv-aids-evidence-from-population-surveillance-rural-south-africa-1993-2013
#16
Brian Houle, Athena Pantazis, Chodziwadziwa Kabudula, Stephen Tollman, Samuel J Clark
BACKGROUND: Literature is limited on the effects of high prevalence HIV on fertility in the absence of treatment, and the effects of the introduction of sustained access to antiretroviral therapy (ART) on fertility. We summarize fertility patterns in rural northeast South Africa over 21 years during dynamic social and epidemiological change. METHODS: We use data for females aged 15-49 from the Agincourt health and socio-demographic surveillance system (1993-2013)...
March 25, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905897/cost-and-cost-effectiveness-of-tuberculosis-treatment-shortening-a-model-based-analysis
#17
G B Gomez, D W Dowdy, M L Bastos, A Zwerling, S Sweeney, N Foster, A Trajman, M A Islam, S Kapiga, E Sinanovic, G M Knight, R G White, W A Wells, F G Cobelens, A Vassall
BACKGROUND: Despite improvements in treatment success rates for tuberculosis (TB), current six-month regimen duration remains a challenge for many National TB Programmes, health systems, and patients. There is increasing investment in the development of shortened regimens with a number of candidates in phase 3 trials. METHODS: We developed an individual-based decision analytic model to assess the cost-effectiveness of a hypothetical four-month regimen for first-line treatment of TB, assuming non-inferiority to current regimens of six-month duration...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27904470/corrigendum-community-composition-and-abundance-of-bacterial-archaeal-and-nitrifying-populations-in-savanna-soils-on-contrasting-bedrock-material-in-kruger-national-park-south-africa
#18
Saskia Rughöft, Martina Herrmann, Cassandre S Lazar, Simone Cesarz, Shaun R Levick, Susan E Trumbore, Kirsten Küsel
[This corrects the article on p. 1638 in vol. 7, PMID: 27807431.].
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27903950/shout-it-now-a-mobile-hct-model-employing-technology-and-edutainment-in-south-africa
#19
Joseph Daniels, Arnost Komarek, Bruce Forgreive, Kathryn Pahl, Stephen Stafford, Laurie Campbell Bruns, Thomas Coates
BACKGROUND: Mobile HIV counseling and testing (HCT) has been effective in reaching men, women, and adolescents in South Africa. However, there is limited understanding of effective mobile HCT programs utilizing tools like technology and edutainment to increase HIV counseling and testing rates. The authors examine data from the Shout-It-Now (S-N) program that uses such tools in South Africa. METHODS: The S-N program utilizes various forms of technology and ongoing telephonic counseling within a 6-step program of HIV testing and linkage-to-care support, and program data were analyzed over an 18-month period...
November 30, 2016: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/27903632/genomic-prediction-with-pedigree-and-genotype-%C3%A3-environment-interaction-in-spring-wheat-grown-in-south-and-west-asia-north-africa-and-mexico
#20
Sivakumar Sukumaran, Jose Crossa, Diego Jarquin, Marta Lopes, Mathew P Reynolds
Developing genomic selection (GS) models is an important step in applying GS to accelerate the rate of genetic gain in grain yield in plant breeding. In this study, seven genomic prediction models under two cross-validation scenarios were tested on 287 advanced elite spring wheat lines phenotyped for grain yield (GY), thousand-grain weight (GW), grain number (GN), and thermal time for flowering (TTF) in 18 international environments (year-location combinations) in major wheat producing countries in 2010 and 2011...
November 30, 2016: G3: Genes—Genomes—Genetics
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