Risk assessment indexes for shellfish poisoning outbreak caused by red tide / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To establish the indexes and weights of risk assessment of shellfish poisoning outbreak caused by red tide.</p><p><b>METHODS</b>The risk assessment indexes were developed with the methods of literature review, brainstorm and expert consultation, and the weights of indexes were calculated by the method of analytic hierarchy process. The established indexes contained the risk possibility, impacts of public health, population vulnerability and resilience. The relative risk indexes(integrated risk indexes) of different shellfish poisoning were computed by combining hierarchy process and TOPSIS methods. Moreover, the weights of indexes were further used to generate absolute risk values by multiplying indexes.</p><p><b>RESULTS</b>Four primary indexes and 17 secondary indexes were identified for risk assessment of shellfish poisoning outbreak. Of 17 secondary indexes, the knowing rate of shellfish poisoning, medical accessibility, the number of people being affected, laboratory testing capacity and the habits of eating seafood of local residents had relatively large weights (0.0876, 0.0840, 0.0716, 0.0703 and 0.0644, respectively), which accounted for nearly 38% of the total weight. All consistency ratio (CR) were less than 0.1. The index system was applied in Cangnan county of Zhejiang province. The results showed the relative risk indexes of paralytic shellfish poisoning (PSP), diarrhetic shellfish poisoning (DSP), neurotoxic shellfish poisoning (NSP) and amnesic shellfish poisoning (ASP) were 0.4526, 0.7116, 0.1657 and 0.2884, and the absolute risk values were 0.2542, 0.2668, 0.1907 and 0.2184, respectively. The risk orders of the 4 kinds of shellfish poisoning sorted by relative risk indexes and absolute risk values were consistent.</p><p><b>CONCLUSIONS</b>The indexes and weights of risk assessment of shellfish poisoning outbreak caused by red tide are established, which can provide scientific advice for prevention and control of shellfish poisoning outbreak.</p>

Epidemiological analysis of malaria situation in Wenzhou City in 2015 / 中国血吸虫病防治杂志

Objective To analyze the characteristics of malaria prevalence in Wenzhou City,so as to provide the evidence for improving the comprehensive control of malaria. Methods The epidemiological data of malaria cases in Wenzhou City in 2015 were collected and analyzed with the descriptive epidemiological methods. Results Totally 24 imported malaria cases were reported in Wenzhou City in 2015 with the incidence of 0.26 per 100000 and no case was dead. Plasmodium vivax,P. fal-ciparum,and P. ovale were identified in 1(4.17%),20(83.33%),and 3(12.50%)cases,respectively. The cases reported in Rui'an,Cangnan and Lucheng counties/districts accounted for 70.83%(17/24)of the total cases in Wenzhou City. The cases were mostly concentrated in male young adults and 23 cases(95.83%)were imported from Africa. Conclusion Malaria epi-demic situation in Wenzhou City is relatively stable and no local malaria cases were reported in 2015. However,the control work of imported malaria should be strengthened.