Institute for Pathogen Control Engineering, School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK.
J Water Health. 2010 Sep;8(3):572-6. doi: 10.2166/wh.2010.097. Epub 2010 Mar 9.
A quantitative microbial risk analysis-Monte Carlo method was used to estimate norovirus and Ascaris infection risks to urban farmers in developing countries watering their crops with wastewater. For a tolerable additional disease burden of <or=10(-4) DALY loss per person per year (pppy), equivalent to 1 percent of the diarrhoeal disease burden in developing countries, a norovirus reduction of 1-2 log units and an Ascaris egg reduction to 10-100 eggs per litre are required. These are easily achieved by minimal wastewater treatment-for example, a sequential batch-fed three tank/pond system. Hygiene improvement through education and regular deworming are essential complementary inputs to protect the health of urban farmers.
采用定量微生物风险分析-蒙特卡罗方法，对发展中国家城市农民利用污水灌溉作物时诺如病毒和蛔虫感染的风险进行了估计。对于可容忍的额外疾病负担<或=10（-4）人每年残疾调整生命年（pppy）损失（相当于发展中国家腹泻疾病负担的 1%），需要将诺如病毒减少 1-2 个对数单位，将蛔虫卵减少到每升 10-100 个虫卵。通过最小化废水处理，例如顺序分批三槽/池塘系统，很容易实现这些目标。通过教育和定期驱虫来改善卫生是保护城市农民健康的必要补充投入。
