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Perceptions about chronic health conditions, multimorbidity and self-management practices in rural northeast South Africa: findings from a qualitative study.
INTRODUCTION: Chronic health conditions are the leading causes of morbidity and mortality worldwide, with a disproportionately high burden in low-income and middle-income countries. The burden arising from these conditions presents immense challenges to countries with dysfunctional public healthcare systems, such as South Africa. This necessitates patients to have a good understanding of the conditions and optimal self-management approaches. We explored patients' understanding of chronic health conditions and self-management practices, including self-monitoring, in the rural South African community of Agincourt in the subdistrict of Bushbuckridge, Mpumalanga Province. METHODS: We randomly selected patients receiving routine care for chronic health conditions in primary healthcare facilities who were linked to the Agincourt Health and Demographic Surveillance System to participate in focus group discussions. Six focus groups (three with men and three with women) were conducted, with 17 male and 19 female participants (n=35) living with different chronic health conditions. Data were collected using body mapping exercises and semistructured focus group discussions facilitated by two experienced qualitative research assistants. An inclusive thematic approach was used for analysis. RESULTS: Participants identified most chronic health conditions and their progression. Participants expressed that some consequences of chronic health conditions were unavoidable and some were attributed to medications. Three themes emerged on the management of chronic health conditions: (1) individual-level management, where participants actively changed or managed lifestyle factors associated with the conditions; (2) clinic-level management and support, where participants believed that following instructions from healthcare providers facilitates better management of their condition(s); and (3) prevention and screening, to prevent disease progression and development of complications. Participants also highlighted the role of religion in the control of chronic disease risk factors and traditional treatments for uncommon conditions such as epilepsy. Costs associated with lifestyle changes and equipment to manage and monitor health were highlighted as barriers to self-management of chronic health conditions. CONCLUSIONS: Our findings contribute to emerging research on chronic health conditions and self-management approaches. Participants in our study demonstrated a good understanding of various chronic health conditions but lacked knowledge of self-management practices and faced barriers to self-management. There is a need for further studies on self-management of chronic health conditions, including self-monitoring among patients in rural sub-Saharan settings.
Genetically distinct within-host subpopulations of hepatitis C virus persist after Direct-Acting Antiviral treatment failure.
Analysis of viral genetic data has previously revealed distinct within-host population structures in both untreated and interferon-treated chronic hepatitis C virus (HCV) infections. While multiple subpopulations persisted during the infection, each subpopulation was observed only intermittently. However, it was unknown whether similar patterns were also present after Direct Acting Antiviral (DAA) treatment, where viral populations were often assumed to go through narrow bottlenecks. Here we tested for the maintenance of population structure after DAA treatment failure, and whether there were different evolutionary rates along distinct lineages where they were observed. We analysed whole-genome next-generation sequencing data generated from a randomised study using DAAs (the BOSON study). We focused on samples collected from patients (N=84) who did not achieve sustained virological response (i.e., treatment failure) and had sequenced virus from multiple timepoints. Given the short-read nature of the data, we used a number of methods to identify distinct within-host lineages including tracking concordance in intra-host nucleotide variant (iSNV) frequencies, applying sequenced-based and tree-based clustering algorithms to sliding windows along the genome, and haplotype reconstruction. Distinct viral subpopulations were maintained among a high proportion of individuals post DAA treatment failure. Using maximum likelihood modelling and model comparison, we found an overdispersion of viral evolutionary rates among individuals, and significant differences in evolutionary rates between lineages within individuals. These results suggest the virus is compartmentalised within individuals, with the varying evolutionary rates due to different viral replication rates and/or different selection pressures. We endorse lineage awareness in future analyses of HCV evolution and infections to avoid conflating patterns from distinct lineages, and to recognise the likely existence of unsampled subpopulations.
Socio-economic status is a social construct with heritable components and genetic consequences.
In civilizations, individuals are born into or sorted into different levels of socio-economic status (SES). SES clusters in families and geographically, and is robustly associated with genetic effects. Here we first review the history of scientific research on the relationship between SES and heredity. We then discuss recent findings in genomics research in light of the hypothesis that SES is a dynamic social construct that involves genetically influenced traits that help in achieving or retaining a socio-economic position, and can affect the distribution of genes associated with such traits. Social stratification results in people with differing traits being sorted into strata with different environmental exposures, which can result in evolutionary selection pressures through differences in mortality, reproduction and non-random mating. Genomics research is revealing previously concealed genetic consequences of the way society is organized, yielding insights that should be approached with caution in pursuit of a fair and functional society.