- Title
- The role of environmental factors, vegetation type, and community knowledge, attitude, and practices on schistosomiasis intermediate host snails’ distribution in the Nelson Mandela Bay water bodies
- Creator
- Campbell, Prince Samkelo
- Subject
- Schistosoma -- Nelson Mandela Bay Municipality (South Africa)
- Subject
- Schistosomiasis -- Nelson Mandela Bay Municipality (South Africa)
- Subject
- Schistosomiasis -- Prevention -- Nelson Mandela Bay Municipality (South Africa)
- Subject
- Tropical medicine
- Date Issued
- 2024-04
- Date
- 2024-04
- Type
- Master's theses
- Type
- text
- Identifier
- http://hdl.handle.net/10948/63813
- Identifier
- vital:73615
- Description
- Schistosomiasis, often known as bilharzia, is a parasitic water-borne disease caused by trematode flatworms of the genus Schistosoma. In 76 endemic countries, including 46 in Africa, over 800 million individuals are at risk of contracting the disease. This study examined the influence of water physicochemical properties, vegetation type and community knowledge, attitudes and practices (KAP) on the distribution and habitat preference of schistosomiasis intermediate host snails in the communities of Kariega and Kwa Nobuhle, in Nelson Mandela Bay. Methods. A quantitative cross-sectional research design approach was employed in this study. Data for the water physicochemical properties was collected over different seasons over a 9-month period. Eight sampling sites were selected based on their proximity to residential areas. A simple dip method was used for surface water samples and measurements done using a Bante 900P multiparameter meter, Macherey Nagel PF-12 plus, and hardness meter. A 300 μm mesh scoop net on a metal frame was used to capture snails. At each sample site, the predominant plant species were gathered and transported to experts in the Botany Department at Nelson Mandela University for identification. The composition and percentage cover of vegetation were visually estimated and documented. A structured questionnaire was used to elicit responses from 380 participants for the pre- and post-intervention KAP study, using the interview format. Data was analysed using R software (version 4.3.1) and Microsoft Office 365 Excel (2019 version). Results. Freshwater snails were found in all eight water bodies studied; however, schistosomiasis intermediate host snails were only found in three of them while the prevailing species in the study sites were Physa snails. There was no correlation between the number of snails and turbidity (r=-0.070). However, a negative and weak correlation existed between snails and DO (r=-0.185), hardness (r=-0.210), pH (r=-0.235), TDS (r=-0.236), EC (r=-0.240), salinity (r=-0.242), and temperature (r=-0.273). There was also a negative correlation between snails and vegetation coverage (r=-0.127). Of the 380 study participants, only 8.7% were aware of the disease pre-intervention. The paired samples t-test results demonstrate a difference (7.2 ± 2.5) in knowledge scores, and the improvement in knowledge levels post-intervention is statistically significant (p<0.001). Conclusion. The study discovered an abundance of Physa snails; considering their biological characteristics and ability to endure, these snails could potentially serve as a biological control agent in locations where the
- Description
- Thesis (MSc) -- Faculty of Health Sciences, School of Behavioural & Lifestyle Sciences, 2024
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (xviiii, 319 pages)
- Format
- Publisher
- Nelson Mandela University
- Publisher
- Faculty of Health Sciences
- Language
- English
- Rights
- Nelson Mandela University
- Rights
- All Rights Reserved
- Rights
- Open Access
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NMU School of Behavioural Sciences
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Campbell, S April 2024.pdf | 9 MB | Adobe Acrobat PDF | View Details Download |