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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

The epidemiology and treatment outcomes of tuberculosis cases in Lesotho between 2009 and 2019

Montsi, Sello January 2022 (has links)
Thesis (MPH. (Epidemiology)) -- University of Limpopo, 2022 / Background: Tuberculosis (TB) is a fatal disease globally, if not managed well, with a million or more people dying by the disease annually in low and middle-income countries (LMIC). Around two billion people are thought to be asymptomatically (latently) infected with Mycobacterium tuberculosis, putting them at risk of acquiring active tuberculosis. Tests that identify immunoreactivity to mycobacterial antigens rather than live bacteria, as well as mathematical modelling, are used to estimate the prevalence of latent tuberculosis infection. According to reports, tuberculosis (TB) was the cause of 1.3 million fatalities among HIV-negative people in 2016, surpassing the global number of HIV/acquired immune deficiency syndrome (AIDS) deaths. In addition, TB was a factor in 374,000 HIV-related deaths. Despite the effectiveness of chemotherapy over the last seven decades, tuberculosis remains the world's leading infectious killer. In 2016, 10.4 million new cases were reported, a number that has remained constant since the dawn of the twenty-first century, confounding public health specialists tasked with designing and implementing measures to lessen the global burden of tuberculosis disease. As a result, the current study aims to look into the epidemiology of tuberculosis in Lesotho in order to help policymakers make decisions on TB control in the country. Methodology:. In the current investigation, a cross-sectional, retrospective descriptive study design was used, as well as a probability sampling strategy. The National TB-Database from the Ministry of Health in Lesotho was used as the source of data for this quantitative investigation, which was analyzed using STATA statistical software version 12 for Windows (STATA Corporation, College Station, Texas). A Chi-Squared test was used to compare categorical variables, while a t-test was used to examine continuous variables. A statistically significant P-value of 0.05 was used. Results: A total of 18 836 TB patient records were recovered, with 45 percent of the TB patients being females. The average age of the TB patients was 35.9 years, with a standard deviation of 12.7%, and the ages ranged from one year to 84 years. There vi was a statistically significant difference between the age groups (p value 0.001), with 33.1 percent of TB patents being in the age group 25–34 years, followed by 29 percent, 15.4 percent, 11.2 percent, and 5.5 percent in the age groups 35–44 years, 45–55 years, 15–24 years, and 55–64 years 65 years.. There has been a fluctuating treatment outcome of TB from 63.5% for cured patients in 2012 to 57.2% in 2013 and this rose to 60.4% in 2014 then eventually reached 76.7% in 2019. The TB treatment success rate in Lesotho also showed a similar trend as the cure rate. The overall TB death rates in the current study was found to be increasing on an annual basis from 7.4% in 2012 to 9.2% in 2018 then dropped to 8.5% in 2019. The TB patients who have not been evaluated for treatment outcomes have been decreasing annually from 4.4% in 2012 to 0.8% in 2019. The proportion of TB patients with known HIV status increased from 22.3% in 2015 to 90.5% in 2019 and similarly to the proportion of TB patients with HIV status positive increased from 15.1% in 2015 to 60.4% in 2019. The proportion of TB patients with HIV status positive increased with increasing age group all age groups. Conclusion: TB is still a concern in Lesotho, where treatment target goals have not yet been fulfilled, the findings of this study underline the importance of addressing the underlying socio-economic causes of TB. The most important goal in TB control is to detect 70% and cure at least 85% of sputum smear positive cases. If these goals are met, the prevalence, incidence, transmission, and medication resistance to tuberculosis (TB) could all decrease. Despite the National Tuberculosis Control Programme's attempts to enhance TB patients' access to treatment and adherence to therapy, the percentage of patients who have good treatment outcomes remains low. Despite having an 84 percent detection rate and using the DOTS technique, the available data did not identify the types of tuberculosis, therefore we were unable to forecast multidrug-resistant tuberculosis (MDR-TB).
32

Antimycobacterial activity of synthetic compounds isolated from South African medicinal plants against mycobacterium tuberculosis

Ledwaba, Elizabeth Ramadimetsa 11 1900 (has links)
M. Tech. (Department of Health Sciences, Faculty of Applied and Computer Sciences), Vaal University of Technology. / Tuberculosis (TB) remains one of the most difficult infectious diseases to control in the world today. The disease spreads easily in overcrowded, badly ventilated places and among people who are undernourished. Trends in the incidence of TB together with the development of multi-drug (MDR-TB) and extensively drug resistant (XDR-TB) strains of TB raises the need to intensify the search for more efficient drugs to combat this disease. Herbal remedies used in traditional medicine provide an interesting and largely unexplored source for the discovery of potentially new drugs for infections such as TB. The aim of the study was to evaluate the in vitro antimycobacterial activity of synthesized compounds from medicinal plants against Mycobacterium tuberculosis (M. tuberculosis). About 40 synthesized compounds isolated from South African medicinal plants were screened against H37RV using microplate alamar blue assay (MABA). Identified active compounds were screened against resistant strains of M. tuberculosis (MDR, XDR and pre-XDR) and sensitive clinical isolates of TB. Cytotoxicity and synergistic drug combination studies were done on active compounds to validate their toxicity and synergy levels. Cytotoxicity was done by sulforhodamine assay (SRB) against the C2C12 cell line. Only six compounds showed activity against M. tuberculosis with minimum inhibitory concentration (MIC) below 10μg/ml. The results obtained indicated that the cytotoxicity effects of the three compounds on C2C12 cells demonstrated marginal toxicity except for MVB 282/61215 which showed a high toxicity at the lowest concentration of 0.156μg/ml with over 100% viable cells at the highest concentration (5μg/ml). MVB 282/61271 had the highest percentage cell viability (65%) at the lowest concentration. Only two compounds had a higher potency evoking a bigger response at low concentrations with treated cells still viable after 3 days of incubation with the compound which was comparable with the treatment of isoniazid (INH). Synergistic activity of the six compounds was less in INH combination as compared to the rifampicin’s (RIF) combination. The results demonstrated that the synergistic interaction between the compounds and RIF could the antituberculosis acitivity. In conclusion the synergistic effects with RIF translate to lower dosing requirements of the compounds and the potential to combat multidrug resistant TB. In deed there is no doubt that natural products, with their range of interesting chemical structures and powerful antimycobacterial effects are certain to remain important participants in the development of new generations of antimycobacterial drugs.
33

PhoR, PhoP and MshC: Three essential proteins of Mycobacterium tuberculosis

Loney, Erica 21 August 2014 (has links)
No description available.
34

An exploration of barriers associated with low voluntary counselling and testing uptake by adult tuberculosis patients attending primary health care clinics, buffalo city municipality, Eastern Cape

Jafta, Zukiswa January 2008 (has links)
Magister Public Health - MPH / The aim of the study is to explore the barriers associated with low VCT uptake by the TB patients attending primary health care clinics within the Buffalo City municipality. The study population was drawn from TB patients attending the primary health care facilities in Buffalo city municipality in the Eastern Cape Province. Eight participants were purposively selected to include those who had accepted VCT as well as those who did not.
35

Tuberculosis awareness created through Facebook: a case study approach of TB Proof South Africa’s Facebook page

Asongu, Ndemaze 07 1900 (has links)
Text in English with Abstracts in English and Afrikaans / Health promotion is an educational tool that can be used to educate and create awareness of health issues through various media forms. The purpose of this study was to explore the use of TB Proof South Africa‘s Facebook page in creating TB awareness. The literature on TB, social media, health promotional campaigns and health promotional models was reviewed to contextualise this study. A qualitative case study approach was used to collect data from TB Proof South Africa‘s Facebook page. Data was collected using three data collection methods; namely, online ethnographic observation, textual analysis and visual analysis. The findings indicate that TB Proof South Africa‘s Facebook page creates awareness of TB. Results from this study also suggested collaboration between South African healthcare professionals and traditional health practitioners in the fight against tuberculosis. The study advocates the need for comparative studies to explore the use of other health-related Facebook pages. / Gesondheidsbevordering is ʼn opvoedkundige werktuig wat gebruik kan word om op te voed en bewustheid van gesondheidskwessies deur middel van verskeie mediavorme te skep. Die doel van hierdie studie was om die gebruik van TB Proof South Africa se Facebook-blad in die skepping van TB-bewustheid te verken. Leesstof oor TB, sosiale media, gesondheidsbevorderingsveldtogte en gesondheidsbevorderingsmodelle is beoordeel om hierdie studie te kontekstualiseer. ‘n Kwalitatiewe gevallestudiebenadering is gebruik om data van TB Proof South Africa se Facebook-blad in te samel. Data is ingesamel deur gebruikmaking van drie data-insamelingsmetodes, naamlik aanlyn etnografiese waarneming, teksontleding en visuele ontleding. Die bevindings dui daarop dat TB Proof South Africa se Facebook-blad bewustheid van TB skep. Resultate van hierdie studie beveel ook samewerking tussen Suid-Afrikaanse gesondheidsorgberoepslui en tradisionele gesondheidspraktisyns in die stryd teen tuberkulose aan. Die studie bepleit die behoefte aan vergelykende studies om die gebruik van ander gesondheidsverwante Facebook-blaaie te verken. / Communication Science / M.A. (Communication)
36

The effect of a provincial communcation strategy to address HIV, AIDS, STIs and TB (HAST) in the Limpopo Province

Rapakwana, Ngwako Johannah 02 1900 (has links)
The lack of a contextualised, relevant communication strategy focusing specifically on HAST diseases in the Limpopo Province was the impetus for this research. The purpose of this study was, therefore, to explore the knowledge, perceptions and utilisation of health facilities for HAST in order to develop an acceptable and effective communication strategy for the Province to address the high rate of HAST diseases. The study followed a qualitative approach guided by the major tenets of the Health Belief Model, namely, to determine modifying factors, individual beliefs and cues for action. An in-depth literature review was followed by focus group interviews with the community members and personal interviews with District and Provincial Deputy Directors. Based on these findings, a communication strategy was drafted and piloted for three months in one of the districts in Limpopo. Further refinement of the communication strategy followed after member-checking and further interviews with directors HAST. The final strategy specifically focused on risk groups with each of the diseases in terms of their beliefs and perceptions. It further resulted in guidelines for health providers in terms of the content and implementation of effective communication strategies within the context of educational, cultural, social and economic factors relevant to Limpopo / Health Studies / D. Litt. et Phil. (Health Studies)

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