Seasonal dynamics of Vibrio cholerae and its phages in riverine ecosystem of Gangetic West Bengal: cholera paradigm

Seasonal dynamics of Vibrio cholerae and its phages in riverine ecosystem of Gangetic West Bengal: cholera paradigm
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西孟加拉恒河河流生态系统霍乱弧菌及其噬菌体的季节动态:霍乱范式

DOI:
10.1007/s10661-014-3851-1
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发表时间:
2014
影响因子:
3
通讯作者:
Sarkar B.L
Sarkar B.L
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Mookerjee S;Jaiswal A;Batabyal P;Einsporn M;Sarkar B.L

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恒河三角洲是一个有百年历史的霍乱流行带,河流-河口生态系统在霍乱传播中的作用从未被阐明。首次分析了印度西孟加拉邦Hooghly河-河口环境中霍乱弧菌o1 /O139和噬菌体的季节性、分布和丰度及其与夏季、季风和冬季霍乱发病模式的相关性。对胡霍利河(Howrah)和钻石港(Diamond Harbour)两个地点采集的146份水样进行了理化分析,并对可培养弧菌计数(CVC)、V。霍乱o1 /O139和噬菌体。检出1型霍乱56份(38.3%),v型霍乱66份(45.2%)。choleraeO1噬菌体。潮水、水温(31±1.6°C)和浊度(≥250浊度单位(NTU))显著刺激v。河流生态系统中的霍乱和噬菌体丰度。v的孤存在性。在水生环境中,霍乱弧菌和噬菌体(p< 0.0001)表明霍乱弧菌和噬菌体(V. choleraeO1或V. choleraeO1)占主导地位。另一个是cholerae1 Φ)。加尔各答霍乱病例与v。水生环境中的霍乱提示河流-河口生态系统在霍乱传播中的作用。一个“生物监测工具”的物理化学刺激物,潮汐和气候变化已提出整理v。霍乱和噬菌体动力学,可以预先警告任何即将爆发的霍乱。
The Gangetic delta is a century-old cholera endemic belt where the role of riverine–estuarine ecosystem in cholera transmission has never been elucidated. Seasonality, distribution, and abundance of environmentalVibrio choleraeO1/O139 and vibriophage in Hooghly riverine–estuarine environment and their correlation with cholera incidence pattern in West Bengal, India, have been analyzed for the first time across summer, monsoon, and winter months. A total of 146 water samples collected from two sites of the Hooghly River (Howrah and Diamond Harbour) were analyzed physicochemically along with cultivableVibriocount (CVC),V. choleraeO1/O139, and vibriophages.V. choleraeO1 was detected in 56 (38.3 %) samples, while 66 (45.2 %) were positive forV. choleraeO1 phages. Flood tide, water temperature (31 ± 1.6 °C), and turbidity (≥250 nephelometric turbidity unit (NTU)) significantly stimulatedV. choleraeand vibriophage abundance in riverine ecosystem. Solitary existence ofV. choleraeO1 and phages (p< 0.0001) in aquatic environment divulges the dominance of either of the entity (V. choleraeO1 orV. choleraeO1 Φ) on the other. Significant association (p< 0.05) between Kolkata cholera cases andV. choleraeO1 in aquatic environment implies the role of riverine–estuarine ecosystem in cholera transmission. A “biomonitoring tool” of physicochemical stimulants, tidal, and climatic variants has been proposed collatingV. choleraeand phage dynamics that can forewarn any impending cholera outbreak.
印度霍乱流行病灶可利用水源中存在产毒霍乱弧菌。
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发表时间: 2012
影响因子: 2.2
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期刊: The Lancet
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