globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.03.063
Scopus记录号: 2-s2.0-85047385784
论文题名:
Understanding human infectious Cryptosporidium risk in drinking water supply catchments
作者: Swaffer B.; Abbott H.; King B.; van der Linden L.; Monis P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138
起始页码: 282
结束页码: 292
语种: 英语
英文关键词: 18S ; gp60 ; Infectivity assay ; Pathogen ; Quantitative microbial risk assessment ; Surface water
Scopus关键词: Agriculture ; Catchments ; Health risks ; Land use ; Pathogens ; Rain ; Reservoirs (water) ; Risk assessment ; Runoff ; Surface waters ; Water quality ; Water supply ; Water treatment ; Cryptosporidium oocysts ; gp60 ; Infectivity assay ; Linear mixed-effects model ; Quantitative microbial risk assessment ; Quantitative microbial risk assessment (QMRA) ; Rainfall-runoff events ; Source water qualities ; Potable water ; drinking water ; rain ; surface water ; drinking water ; bioassay ; catchment ; concentration (composition) ; drinking water ; infectious disease ; infectivity ; lifestyle ; parasite ; pathogen ; pathogenicity ; risk assessment ; runoff ; surface water ; water supply ; water treatment ; Article ; catchment ; controlled study ; cryptosporidiosis ; Cryptosporidium ; Cryptosporidium andersoni ; Cryptosporidium baileyi ; Cryptosporidium bovis ; Cryptosporidium canis ; Cryptosporidium cuniculus ; Cryptosporidium fayeri ; Cryptosporidium galli ; Cryptosporidium macropodum ; Cryptosporidium meleagridis ; Cryptosporidium muris ; Cryptosporidium parvum ; Cryptosporidium ryanae ; Cryptosporidium suis ; Cryptosporidium tyzzeri ; Cryptosporidium ubiquitum ; Cryptosporidium viatorum ; grazing ; infection risk ; nonhuman ; pathogenicity ; polymerase chain reaction ; priority journal ; quantitative analysis ; risk assessment ; runoff ; water quality ; water sampling ; water supply ; water treatment ; analysis ; cryptosporidiosis ; Cryptosporidium ; environmental monitoring ; genetics ; genotype ; human ; isolation and purification ; oocyst ; water management ; water pollutant ; water supply ; Cryptosporidium ; Cryptosporidium parvum ; Cryptosporidiosis ; Cryptosporidium ; Drinking Water ; Environmental Monitoring ; Genotype ; Humans ; Oocysts ; Risk Assessment ; Water Pollutants ; Water Purification ; Water Quality ; Water Supply
英文摘要: Treating drinking water appropriately depends, in part, on the robustness of source water quality risk assessments, however quantifying the proportion of infectious, human pathogenic Cryptosporidium oocysts remains a significant challenge. We analysed 962 source water samples across nine locations to profile the occurrence, rate and timing of infectious, human pathogenic Cryptosporidium in surface waters entering drinking water reservoirs during rainfall-runoff conditions. At the catchment level, average infectivity over the four-year study period reached 18%; however, most locations averaged <5%. The maximum recorded infectivity fraction within a single rainfall runoff event was 65.4%, and was dominated by C. parvum. Twenty-two Cryptosporidium species and genotypes were identified using PCR-based molecular techniques; the most common being C. parvum, detected in 23% of water samples. Associations between landuse and livestock stocking characteristics with Cryptosporidium were determined using a linear mixed-effects model. The concentration of pathogens in water were significantly influenced by flow and dominance of land-use by commercial grazing properties (as opposed to lifestyle properties) in the catchment (p < 0.01). Inclusion of measured infectivity and human pathogenicity data into a quantitative microbial risk assessment (QMRA) could reduce the source water treatment requirements by up to 2.67 log removal values, depending on the catchment, and demonstrated the potential benefit of collating such data for QMRAs. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112777
Appears in Collections:气候减缓与适应

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作者单位: South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia 5001, Australia

Recommended Citation:
Swaffer B.,Abbott H.,King B.,et al. Understanding human infectious Cryptosporidium risk in drinking water supply catchments[J]. Water Research,2018-01-01,138
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