ABSTRACT
Objective To learn the epidemiological characteristics and risk factors of severe fever with thrombocytopenia syndrome(SFTS)in Zhoushan City from 2011 to 2015. Methods The descriptive epidemiological analysis was used to analyze the epidemiological characteristics and a case - control study was applied to analyze the risk factors. Results A total of 95 SFTS cases including 9 dead cases were reported in Zhoushan City from 2011 to 2015. All of the 4 counties had cases reported,and the county with the highest reported rate was Daishan(91. 58% ). SFTS was seasonal obviously and the epidemic peak presented from May to July. The range of age for these SFTS cases was 40 to 88 years old,and over 50 years old were accounted for 92. 53% . The sex ratio of male to female was 1∶ 1. 88,and the incidence density of SFTS in female was significantly higher than male(P ﹤ 0. 01). The main occupation were domestic unemployed(43. 16% )and farmers(35. 79% ). While using multivariate unconditional logistic regression analysis to filter the influencing factors,only working in the fields/ vegetable plots(OR = 2. 542,95% CI:1. 364 - 5. 621)and the outdoor sanitation(OR = 2. 873,95%CI:1. 462 - 5. 025)entered the final model. Conclusion The incidence of SFTS was mainly sporadic in Zhoushan City from 2011 to 2015 ,having obvious regional aggregation . The popular seasons were spring and summer . Working in the fields/ vegetable plots and the poor outdoor sanitation could be the risk factors of SFTS.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the contents of poison in fishes in the Zhoushan Fishery and to analysis its relationship with the degree of ocean pollution.</p><p><b>METHOD</b>Nine kinds of major fishes in the Zhoushan Fishery were sampled and tested. Canonical correlation was conducted to evaluate the correlation between contents of poison in fishes and the degree of ocean pollution.</p><p><b>RESULTS</b>The average contents of nickel among 9 kinds of fishes exceeded normal value by 1.177 times. No significantly statistical differences were found between the levels of poison contents in nine kinds of major fishes during 1997 to 2003 in the Zhoushan Fishery (the P values are all less than 0.05), except that the levels of cadmium and hydrargyrum in some fishes (the P values are all more than 0.05). The coefficient of fishes accumulated from different poisons ranged from 101.80 to 71 210.97. The canonical correlation coefficients of the variables of the contents of plumbum, arsenic and benzene hexachloride, chlorophennothane between fishes and ocean were 0.784 and 0.808 respectively. Positive correlation between them was shown (chi(2) = 20.994, P < 0.01; chi(2) = 38.017, P < 0.01).</p><p><b>CONCLUSION</b>The sanitary quality indexes of all poisons which had been tested fell in the normal ranges except for nickel. The degrees of poisons accumulated among distinct fishes varied, showing the relationship of medium positive correlation between the poison contents of fishes and the degree of the ocean pollution.</p>