[Dynamic Abundance of Oocysts in the Mezam Watershed in Bamenda (Northwest Region, Cameroon)].

Q4 Medicine

Bulletin de la Societe de pathologie exotique Pub Date : 2019-02-28 DOI:10.3166/bspe-2019-0079

M. Mbouombouo, G. Ajeagah, J. Ndjama, I. Tchakala, B. Gnon, D. Enah, Gertrude Estelle Yogback

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引用次数: 3

Abstract

In order to evaluate the abundance of oocysts in the Mezam watershed in Bamenda, Northwest Region of Cameroon, a study was carried out from January to June 2017. Samples were collected monthly from 13 stations within the watershed. The direct concentration method and the Ziehl-Neelsen technique were employed in the identification of these parasites. The physicochemical analysis showed that the water samples had a neutral pH (7.46±0.46), lowly mineralized (165.61±110.02μS/cm), moderately oxygenated (60.64 ± 17, 25%), present moderate organic pollution (2.85±2.49mg/l KMnO4). KMnO4) and low levels of orthophosphate (1.8±1.88 mg/l PO43-) and nitrates (2.47±5.06 mg/l NO3-). Biological analysis revealed the presence of Cryptosporidium spp. (143.98±203.35 oocysts/l), Isospora belli (88.47 ± 123.19 oocysts/l), Cyclospora cayetanensis (141.31±143.19 oocysts/l) and Sarcocystis hominis (76 ± 111.04 oocysts/l). The highest densities of these parasites were recorded at the Mufueh stream, situated in the periurban area. Meanwhile, the lowest densities were found in the urban area (Formuki, Mankon, Ayaba and Mezam streams). The dry season showed higher densities of oocysts (471.42±216.32 oocysts /l). Statistical analysis revealed a significant correlation (P ≤ 0.05) between the density of the organisms and the physico-chemical parameters such as pH, oxidability, dissolved oxygen and nitrates. Respecting basic hygienic rules as well as treating water before use would reduce the risk of contamination of the population.

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[喀麦隆巴门达(西北地区)Mezam流域卵囊动态丰度]。

为了评估喀麦隆西北地区巴门达Mezam流域卵囊的丰度，2017年1月至6月进行了一项研究。每月从流域内的13个站点采集样本。采用直接浓缩法和Ziehl-Neelsen技术鉴定。理化分析结果表明，水样pH为中性(7.46±0.46)，矿化程度较低(165.61±110.02μS/cm)，含氧程度中等(60.64±17.25%)，有机污染程度中等(2.85±2.49mg/l KMnO4)。低水平的正磷酸盐(1.8±1.88 mg/l PO43-)和硝酸盐(2.47±5.06 mg/l NO3-)。生物学检出隐孢子虫(143.98±203.35个卵囊/l)、belli等孢子虫(88.47±123.19个卵囊/l)、cayetancyclospora(141.31±143.19个卵囊/l)和人肉囊虫(76±111.04个卵囊/l)。这些寄生虫的最高密度记录在位于城郊地区的Mufueh河。与此同时，城市地区(福穆基、曼昆、阿雅巴和梅扎姆河)的密度最低。枯水期卵囊密度较高(471.42±216.32个/l);统计分析表明，微生物密度与pH、氧化性、溶解氧、硝酸盐等理化参数呈显著相关(P≤0.05)。尊重基本的卫生规则，并在使用前对水进行处理，将减少人口受到污染的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Bulletin de la Societe de pathologie exotique Medicine-Medicine (all)

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期刊介绍： Le Bulletin de la Société de pathologie exotique et la société savante (SPE) dont il est la vitrine ont été créés en 1908 par Alphonse Laveran. Destiné, dans un premier temps, à servir de support à la publication des travaux des sociétaires présentés en séance sous forme de communication ou de mémoire, ce périodique est devenu, au fil du temps, une revue internationale francophone multidisciplinaire, ouverte à tous les médecins, vétérinaires, anthropologues et chercheurs travaillant dans le domaine de la médecine tropicale humaine et animale et de la santé publique dans les pays en voie de développement.