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首页> 外文期刊>International Journal of Environmental Research and Public Health >Occurrence of Vibrio Pathotypes in the Final Effluents of Five Wastewater Treatment Plants in Amathole and Chris Hani District Municipalities in South Africa
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Occurrence of Vibrio Pathotypes in the Final Effluents of Five Wastewater Treatment Plants in Amathole and Chris Hani District Municipalities in South Africa

机译：南非Amathole和Chris Hani区市的五个污水处理厂的最终污水中都含有弧菌病原体

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We assessed the occurrence of Vibrio pathogens in the final effluents of five wastewater treatment plants (WWTPs) located in Amathole and Chris Hani District Municipalities in South Africa over a 12 months period between September 2012 and August 2013 using standard membrane filtration technique followed by cultivation on thiosulphate citrate-bile salts-sucrose (TCBS) agar. The identities of the presumptive Vibrio isolates were confirmed using polymerase chain reaction (PCR) including delineation into V. parahaemolyticus, V. vulnificus and V. fluvialis pathotypes. The counts of Vibrio spp. varied with months in all the study sites and ranged in the order of 101 and 104 CFU/100mL. Vibrio distribution also showed seasonality with high counts being obtained in autumn and spring (p 0.05). Prevalence of Vibrio spp. among the five WWTPs also differed significantly (p 0.05). Of the 300 isolates that were confirmed as belonging to the Vibrio genus, 29% (86) were V. fluvialis, 28% (84) were V. vulnificus and 12% (35) were V. parahaemolyticus. The isolation of Vibrio pathogens from the final effluent suggests that this pathogen is in circulation in some pockets of the population and that the WWTPs under study do not efficiently remove bacterial pathogens from the wastewater and consequently are threats to public health.
机译：我们采用标准的膜过滤技术，随后在2012年9月至2013年8月的12个月内，评估了位于南非Amathole和Chris Hani District Municipality的五个废水处理厂（WWTP）的最终废水中弧菌病原体的发生情况。硫代硫酸盐柠檬酸盐-胆盐-蔗糖（TCBS）琼脂。使用聚合酶链反应（PCR）证实了推定弧菌的身份，包括确定副溶血性弧菌，创伤性弧菌和流感病毒型。弧菌的数量。在所有研究地点中，随着月份的变化而变化，其范围为10 1 和10 4 CFU / 100mL。弧菌的分布也表现出季节性，秋季和春季的计数很高（p <0.05）。弧菌的流行。五个污水处理厂之间的差异也很大（p <0.05）。在确认属于弧菌属的300个分离株中，有29％（86）是河豚弧菌，有28％（84）是创伤弧菌，还有12％（35）是副溶血弧菌。从最终的污水中分离出弧菌病原体表明，该病原体在人群的某些地方流通，正在研究的污水处理厂不能有效地从废水中去除细菌病原体，因此对公共健康构成威胁。

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