Spatial distribution characteristics of severe fever with thrombocytopenia syndrome in Yantai City of Shandong Province from 2015 to 2020 / 中华地方病学杂志

Objective:To analyze the spatial distribution characteristics and spatial aggregation of the epidemic of severe fever with thrombocytopenia syndrome(SFTS) in Yantai City of Shandong Province, and to provide basis for formulating effective SFTS prevention and control measures.Methods:The epidemic data of SFTS confirmed cases in each township (street) in Yantai City, Shandong Province from 2015 to 2020 were collected from the "China Disease Prevention and Control Information System Infectious Disease Monitoring and Reporting System", and ArcGIS 10.2 software was used for spatial autocorrelation analysis.Results:From 2015 to 2020, a total of 839 SFTS cases were reported in Yantai City, including 124 deaths; with an average annual incidence rate of 2.14/100 000, and a total case fatality rate of 14.78%. Global spatial autocorrelation analysis showed that the distribution of SFTS cases in Yantai City from 2015 to 2020 showed a positive spatial correlation, with the highest spatial correlation in 2015 (Moran's I = 0.25, Z = 5.66, P < 0.001), and the lowest in 2018 (Moran's I = 0.16, Z = 3.69, P < 0.001). Local spatial autocorrelation and hotspot analysis showed that the epidemic areas of SFTS were mainly in some mountainous and hilly townships (streets) of Laizhou City, Penglai District, Qixia City, Zhaoyuan City, and Haiyang City. Conclusions:The distribution of SFTS epidemic in Yantai City has obvious regional clustering. Intervention measures such as publicity, education and monitoring should be strengthened in high-incidence areas to reduce the incidence of the disease.

Epidemic characteristics and risk factors of severe fever with thrombocytopenia syndrome in Zhaoyuan City, Shandong Province / 中华地方病学杂志

Objective:To understand the epidemic characteristics and risk factors of severe fever with thrombocytopenia syndrome (SFTS) in Zhaoyuan City, and to provide basis for the improvement of prevention and control strategies.Methods:Retrospective analysis was performed to collect the SFTS surveillance data and epidemiological investigation results of confirmed cases in Zhaoyuan City from 2011 to 2018 from the "Infectious Disease Report Information Management System of the China Disease Prevention and Control Information System", and the general situation and epidemiological characteristics, onset and treatment, clinical manifestations and contact history of SFTS cases were analyzed by descriptive epidemiology method; 60 cases of SFTS confirmed cases and 120 healthy people in the same village, same sex, and same age group as the confirmed case were selected by case-control study to analyze the risk factors of SFTS.Results:A total of 140 confirmed SFTS cases were reported in Zhaoyuan City from 2011 to 2018, with a fatality rate of 18.57% (27/140); the onset time was mainly from May to August, accounting for 83.57% (117/140); the age of onset was mainly 50 - 80 years old, accounting for 90.00%(126/140); the sex ratio of men to women was 1.06 ∶ 1.00 (72 ∶ 68); the occupation distribution was dominated by farmers, accounting for 92.14% (129/140). In 140 cases of SFTS, the average time intervals from onset to first visit and from first visit to confirmation of diagnosis were 4 and 6 days, respectively; and the average medical visit history from onset to diagnosis was 2 times, 60.71% (85/140) of the cases were first diagnosed by township medical institutions, 86.43% (121/140) of the cases were diagnosed by municipal hospitals; the first symptom was fever, which accounted for 92.86% (130/140). The logistic regression analysis showed that domestic animals [odds ratio ( OR)=9.209, 95% confidence interval ( CI): 2.064-41.083] and tick bites ( OR = 16.818, 95% CI: 1.553 - 182.164) were risk factors for SFTS. Conclusions:The onset time of SFTS is mainly from May to August in Zhaoyuan City, and farmers over 50 years old are the key population; domestic animals and tick bites are the risk factors for the onset of SFTS. The publicity and health education of SFTS prevention and control knowledge for key populations should be strengthened.

Effect of intravenous immunoglobulins G on rat subjected to chronic unpredictable stress / 中国生化药物杂志

Objective To investigate the effect of intravenous immunoglobulins G on rat subjected to chronic un-predictable stress. Method Rats were randomly divided into 2 groups (IVIG+stress group and stress-only group). Sucrose preference test, force swim test and neurogenesis analyze were used to analyze the effect of IVIG on rats in stress group. Results Sucrose consumption in IVIG group was significantly more than CUS group(P<0.01), while non floating time of force swim was significantly lower than CUS group(P<0.01). The difference of BrdU positive cell number in Hippocampus between two groups was significant(P<0.01). Conclusion IVIG show an antidepressant like effect, the mechanism may be involved in eliminate inflammatory cytokine of peripheral circulation.

Infection Rate of HBV among High School Graduates in Jingjiang City of Jiangsu Province / 中国慢性病预防与控制

Objective To investigate the positive rates of HBsAg and abnormal rates of Alanine aminotransferase among high school graduates in Jingjiang city.Methods HBsAg were detected by ELISA and ALT was detected by rate assay among 20 988 high school graduates during 2004—2007 in Jingjiang city.Results The HBsAg positive students were 1754.The total positive rate of HBsAg was 8.36%.The positive rate of HBsAg of male(9.46%)was higher than that of female(6.95%).The HBsAg positive rate of rural students(9.44%)was higher than that of urban students(7.28%).HBsAg positive rates of urban students showed a decreasing trend during 2004—2007,the rates were 9.31%,8.08%,6.74% and 5.24%,respectively(P0.05).There were 155 cases(8.4%)with increased ALT among 1754 HBsAg positive students.Conclusion The total positive rate of HBsAg among high school graduates in Jingjiang city from 2004—2007 was 8.36%.The HBsAg positive rate of male students was higher than that of female.The HBsAg positive rate of rural students was higher than that of urban students.8.4% students were found ALT abnormal.We should intensify Hepatitis B vaccine in time to prevent the spreading of HBV.

Low dose fluorouracil and cisplatin continuous infusion for the treatment of advanced gastric carcinoma / 中国癌症杂志

Purpose:To evaluate the efficacy and toxicity of the low dose 5 Fluorouracil and Cisplatin continuous infusion for treatment of advanced gastric carcinoma. Methods:A total of 21 patients were enrolled in the trial, FP therapy consisted of 5 FU (0 25/m 2/d) every day by continuous infusion and cisplatin (6 mg/m 2/d) every day by continuous infusion for 3 weeks.Results:A complete response was observed in 2 cases and a partial response in 10 cases, for and overall response rate of 57.1%. Toxic effects included leukopenia, thrombocytopenia, nauesa and vomiting.Conclusions:FP therapy is a promising regimen for patients with advanced gastric carcinoma.

Detection of Schistosoma japonicum cercaria DNA by loop-mediated isothermal amplification / 中国血吸虫病防治杂志

Objective To establish a method for detecting cercaria of Schistosoma japonicum.Methods The loop-mediated isothermal amplification(LAMP)was used.The cercaria DNA of Schistosoma japonicum was extracted by using GeneReleaser.Four primers which recognized 6 distinct regions on the calcium-binding protein gene of cercaria of Schistosoma japonicum were designed and used for LAMP assay and Clonorchis sinensis was used as the negative control for evaluating the specificity and 20,10,5,1 cercariae of Schistosoma japonicum were amplified by LAMP for evaluating the sensitivity.The LAMP results were judged with the naked eyes and electrophoretic analysis.Results After LAMP reaction,the positive signal was observed with cercariae of Schistosoma japonicum.By contrast,no positive signal was observed for Clonorchis sinensis.The detection limit of LAMP assay was 1 cercaria of Schistosoma japonicum per reaction.Conclusion LAMP assay has usefulness for rapid detection of cercariae of Schistosoma japonicum.