摘要
目的研究上海市场零售梭子蟹中副溶血性弧菌的污染状况,并对副溶血性弧菌可能引发的公共卫生风险进行初步评估。方法采用最可能数(MPN)法检测上海和宁波市售梭子蟹中副溶血性弧菌的带菌量,采用膳食回顾性调查方法对上海居民梭子蟹消费量进行调查,采用RiskRanger软件对梭子蟹中副溶血性弧菌进行半定量风险评估。结果上海和宁波市零售梭子蟹中副溶血性弧菌阳性率分别为60.5%和13.3%,阳性试样平均菌量分别为0.75MPN/g和5.50MPN/g。膳食调查结果显示,上海居民梭子蟹人均日摄入量为2.95g/d。风险评估结果显示,风险评分为36分,梭子蟹食用者每人每天的发病概率为8.22×10-9,每年上海地区预期发生42.5例副溶血性弧菌感染病例。通过改变评估模型中某些风险的选择,如采取良好的控制措施,风险可降低至原来的1/10。结论上海市售梭子蟹副溶血性弧菌污染状况较为严重,可能对人群健康造成较高的风险,未来有必要进一步加强监测。
Objective To investigate the contamination of Vibrio parahaemolyticus in Portunus trituperculatus in Shanghai and Ningbo retail markets and to assess the public health risks induced by V.parahaemolyticus.Method The counts of V.parahaemolyticus in Portunus trituperculatus were determined by the most probable number （MPN） technique.The consumption pattern of Portunus trituperculatus was investigated in Shanghai residents by retrospective dietary survey.The semi-quantitative risk assessment for V.parahaemolyticus in Portunus trituperculatus was made by a software of Risk Ranger.Result V.parahaemolyticus was isolated from 60.5% （23 /38） of samples from Shanghai while 13.3% （4 /30） from Ningbo with a mean of 0.75 MPN /g and 5.50 MPN /g respectively in positive samples.The daily intake of Portunus trituperculatus for a Shanghai resident was 2.95 g /d.The relative risk for V.parahaemolyticus in Portunus trituperculatus was 36.The probability of illness caused by V.parahaemolyticus in Portunus trituperculatus per day per consumer of interest was 8.22 × 10-9,and the total predicted patients per annum in the population of interest was 42.5 cases.Changing the selection of some risk factors in the model,the risk from the consumption of Portunus trituperculatus decreased for 10 times if good control measures were taken.Conclusion V.parahaemolyticus is frequently found in Portunus trituperculatus in Shanghai retail markets,which may cause higher risks to public health.Therefore,strengthening surveillance in the future is necessary.
出处
《中国食品卫生杂志》
北大核心
2010年第4期371-374,共4页
Chinese Journal of Food Hygiene
关键词
副溶血性弧菌
风险评估
梭子蟹
膳食调查
回顾性
Vibrio parahaemolyticus
Risk Assessment
Portunus trituperculatus
Dietary Survey
Retrospective
