| dc.contributor.author |
Odjadjare, Emmanuel E.O. |
|
| dc.contributor.author |
Obi, Larry C. |
|
| dc.contributor.author |
Okoh, Anthony I. |
|
| dc.date.accessioned |
2011-02-10T18:39:41Z |
|
| dc.date.available |
2011-02-10T18:39:41Z |
|
| dc.date.issued |
2010 |
en_US |
| dc.identifier.uri |
https://hdl.handle.net/10535/7026 |
|
| dc.description.abstract |
"We evaluated the effluent quality of an urban wastewater treatment facility in South Africa and its impact on the receiving watershed for a period of 12 months. The prevalence and antimicrobial susceptibility of potential Listeria pathogens (L. ivanovii and L. innocua) and the physicochemical quality of the treated wastewater effluent was assessed, with a view to ascertain the potential health and environmental hazards of the discharged effluent. Total listerial density varied between 2.9 × 100 and 1.2 × 105 cfu/mL; free living Listeria species were more prevalent (84%), compared to Listeria species attached to planktons (59–75%). The treated effluent quality fell short of recommended standards for turbidity, dissolved oxygen, chemical oxygen demand, nitrite, phosphate and Listeria density; while pH, temperature, total dissolved solids and nitrate contents were
compliant with target quality limits after treatment. The Listeria isolates (23) were sensitive to three (15%) of the 20 test antibiotics, and showed varying (4.5–91%) levels of resistance to 17 antibiotics. Of seven resistance gene markers assayed, only sulII genes were detected in five (22%) Listeria strains. The study demonstrates a potential negative impact of the wastewater effluent on the receiving environment and suggests a serious public health implication for those who depend on the receiving watershed for drinking and other purposes." |
en_US |
| dc.language |
English |
en_US |
| dc.subject |
water quality |
en_US |
| dc.subject |
environmental change |
en_US |
| dc.subject |
watersheds |
en_US |
| dc.title |
Municipal Wastewater Effluents as a Source of Listerial Pathogens in the Aquatic Milieu of the Eastern Cape Province of South Africa: A Concern of Public Health Importance |
en_US |
| dc.type |
Journal Article |
en_US |
| dc.type.published |
published |
en_US |
| dc.type.methodology |
Case Study |
en_US |
| dc.coverage.region |
Africa |
en_US |
| dc.coverage.country |
South Africa |
en_US |
| dc.subject.sector |
Water Resource & Irrigation |
en_US |
| dc.identifier.citationjournal |
International Journal of Environmental Research and Public Health |
en_US |
| dc.identifier.citationvolume |
7 |
en_US |
| dc.identifier.citationpages |
2376-2394 |
en_US |