Institute for Pathogen Control Engineering, School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK.
J Water Health. 2010 Mar;8(1):35-8. doi: 10.2166/wh.2009.136.
Ascaris lumbricoides, the large human roundworm, infects approximately 1,200 million people, with children under the age of 15 being particularly at risk. Monte Carlo quantitative microbial risk analyses were undertaken to estimate median Ascaris infection risks in children under 15 from eating raw carrots irrigated with wastewater. For a tolerable additional disease burden of 10(-5) DALY (disability-adjusted life year) loss per person per year (pppy), the tolerable Ascaris infection risk is approximately 10(-3) pppy, which can be achieved in hyperendemic areas by a 4-log unit Ascaris reduction. This reduction can be easily achieved by wastewater treatment in a 1-day anaerobic pond and 5-day facultative pond (2 log units) and peeling prior to consumption (2 log units).
蛔虫是一种大型人体肠道寄生虫，感染人数约为 12 亿，其中 15 岁以下儿童感染的风险特别高。采用蒙特卡罗定量微生物风险分析方法，评估了儿童因食用受污水灌溉的生胡萝卜而感染蛔虫的平均风险。为了在每人每年可容忍的额外疾病负担 10（-5）DALY（伤残调整生命年）损失中增加 10（-5），每人每年可容忍的蛔虫感染风险约为 10（-3）pppy，在高度流行地区，通过减少 4 个对数单位的蛔虫感染即可实现。通过在 1 天的厌氧塘和 5 天的兼性塘（2 个对数单位）中进行废水处理以及在食用前进行削皮（2 个对数单位），可以轻松实现这种减少。
