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目的探索国际航行船舶外来医学媒介生物传入风险的影响因素。方法采用非匹配的病例对照研究方法,对2010-2011两年内南通口岸的1187艘国际航行船舶截获的医学媒介生物情况进行调查,以医学媒介生物超标的船舶作为阳性组,未超标的为阴性对照组,进行logistic回归分析筛选出与医学媒介生物检出超标相关的风险因素。结果夏季到达的风险高于冬季(OR=11.413);曾检出医学媒介生物超标的船舶风险很高(OR=5.358);发航港来自欧美地区的船舶风险较低(OR=0.144,P<0.05)。多数船员是泰国和伊朗、孟加拉的风险较高,分别是中国船员的4.076和18.122倍。结论季节、曾检出医学媒介生物超标、发航港情况、多数船员国籍、载货种类有明显的风险指示价值,船龄、总吨位、免控证书等指标有一定的参考价值。
Objective To explore the influencing factors of biological risk of imported medical vectors in international voyages. Methods A non-matching case-control study was conducted to investigate the intercepted medical vectors of 1187 international voyages from Nantong port in 2010-2011. The survey was conducted on ships with over-standard medical vectors and negative controls Group, logistic regression analysis screened out the risk factors associated with excessive detection of medical vector organisms. As a result, the risk of arrival in summer was higher than that of winter (OR = 11.413). The ships that had detected excessive medical organism were very high (OR = 5.358), and the ships from Europe and the United States were lower (OR = 0.144, P < 0.05). Most of the crew is Thailand and Iran, Bangladesh, the higher the risk, respectively, 4.076 and 18.122 times the Chinese crew. In the conclusion season, some indicators such as the excess of medical media organisms, the condition of the port of departure, the majority of crew members’ nationality, and the type of cargo carried were clearly indicated as risk indicators, the age of the vessel, the total tonnage and the exemption certificate.