20 February 2018, Volume 29 Issue 1
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  • Analytic study on 2016 government procurement of vector control products in China mainland based on big data technology
    LIU Qi-yong, PAN Shu-wen, YANG Xiao-ran
    Chines Journal of Vector Biology and Control. 2018, 29(1): 1-4. https://doi.org/10.11853/j.issn.1003.8280.2018.01.001
    Abstract ( 327 ) Download PDF ( 1436 )   Knowledge map   Save
    Objective The authors try to analyze the vector control product purchase and market situation in Chinese mainland in 2016 for research and development, as well as for policy-making. Methods Crawled vector control bidding and successful bidder announcements published in the national government procurement platform and provincial and municipal procurement platform, and using the big data processing technology, the key data in the announcements was extracted and analyzed. Results The research results in 2016 show that (1) China's vector control products procurement peaked in April and May; (2) Public bidding and competitive negotiation/negotiation were the main ways of purchasing vector control products; (3) The main purchasers were the Patriotic Health Campaign Committee Office and the Health and Family Planning Commission; (4) The vector control market was still in a decentralized and balanced competitive state. Conclusion The research and analysis results may help relevant departments and enterprises to understand each other's supply and demand characteristics, and provide a reference for the resources allocation, system design and macro decision-making regarding the vector control product and service in the future.
  • Reports on national surveillance of flies in China, 2006-2015
    WU Hai-xia, LU Liang, MENG Feng-xia, GUO Yu-hong, LIU Xiao-bo, LI Gui-chang, REN Dong-sheng, LIU Qi-yong
    Chines Journal of Vector Biology and Control. 2018, 29(1): 5-10. https://doi.org/10.11853/j.issn.1003.8280.2018.01.002
    Abstract ( 463 ) Download PDF ( 1680 )   Knowledge map   Save
    Objective To understand species, population density, and seasonality of flies in human dwellings and surroundings in China and provide the avenue for prevention and control of flies. Methods The surveillance data of flies by cage traps from 42 national surveillance sites were collected during 2006 and 2015. The species composition, density and seasonal and annual fluctuations of different speciesof flies in different habitats, and provinces were compared. Results Percentage of Chrysomya megacephala, Musca domestica, Lucilia sericata, and species of Sarcophagidae together was 75.54%; Density of C. megacephala was 2.23 flies per cage and was the highest. Its density in all 4 habitats were all highest of the monitored species; Musca domestica was the second and density was 1.64 flies per cage. Its density was higher in farm produce markets and outdoor of restaurant than in the other habitats. The third was 1.22 flies per cage of L. sericata and the density was higher in farm produce markets and in green belts. The fourth was 0.88 flies per cage of Sarcophagidae and its density in green belts was obviously higher than in other habitats. Overall, the density of flies was decreasing from 2006 to 2015, except that in 2010. The density of flies from green belts and farm produce markets was similar and higher than that in other two places monitored which was also similar. Density in most provinces was lower than 10.00 flies per cage. Hainan province was 74.22 and was the highest. There was a single peak in June-August during the seasonal fluctuation of total flies. The seasonal fluctuation of every predominant species in different habitats and in most of years was similar. Conclusion Chrysomya megacephala, M. domestica, L. sericata, and species of Sarcophagidae were the predominant fly species in human dwellings and surroundings in China. The density of flies generally decreased since 2006.But surveillance can't be underemphasized. More attentions should be paid on fly control in green belts and in farm produce markets, for density in those habitats was higher than in other habitats. The density peaked in June-August. So, it was important to control flies before the peak occurred.
  • Analytic study on the intervals between illness onset and confirmation of severe fever with thrombocytopenia syndrome cases in China
    SUN Ji-min, LU Liang, LIU Ke-ke, WU Hai-xia, LIU Qi-yong
    Chines Journal of Vector Biology and Control. 2018, 29(1): 11-14. https://doi.org/10.11853/j.issn.1003.8280.2018.01.003
    Abstract ( 389 ) Download PDF ( 1681 )   Knowledge map   Save
    Objective To analyze intervals between illness onset and confirmation of severe fever with thrombocytopenia syndrome (SFTS) cases and related factors which will provide scientific information for its precise control and prevention. Methods Data on SFTS cases from 2011 to 2016 were obtained from China Information System for Diseases Control and Prevention. The intervals from illness onset to confirmation of SFTS cases in different genders, age groups, occupations, seasons, and provinces were summarized and compared using SPSS 20.0 software. Results A total of 5 360 SFTS cases were reported in China from 2011 to 2016 and the median interval from illness onset to confirmation of these cases was 9 d. Intervals from illness onset to confirmation of SFTS cases were significantly different from year to year and the maximum median of the interval of SFTS in 2014. Intervals between illness onset and confirmation of SFTS cases from different provinces were also significantly different, the intervals of Hubei province were the longest and the intervals of Zhejiang province were the shortest. Conclusion Although there were differences in the intervals of SFTS cases from different years, provinces and individual cases, the intervals were nevertheless very long. Appropriate interventions should be implemented to shorten the intervals for the control and prevention of SFTS.
  • Molecular characteristics of common sandflies species (Diptera: Psychodidae) in Hainan province
    CHEN Hui-ying, LIN Yi, CHEN Han-ming, LIU Yi, LI Kai-li, GAO Jing-peng, CHEN Xue-wen, CAI Fang, LIU Chao, YANG Xin-yan, YANG Zhen-zhou, PENG Heng, MA Ya-jun
    Chines Journal of Vector Biology and Control. 2018, 29(1): 15-19. https://doi.org/10.11853/j.issn.1003.8280.2018.01.004
    Abstract ( 383 ) Download PDF ( 1455 )   Knowledge map   Save
    Objective To identify the common species of sandflies in Haikou city based on morphological characteristics, and determine the species specific molecular identity. Methods Sandflies were collected overnight by light-trap monthly in the pigsty, chicken or duck coops or human dwellings around village and urban-rural fringe areas in Haikou city during August 2015 to July 2016, as well as in Sansha city in August, 2017. After counting, partial sandflies were randomly selected and classified by morphological characteristics. Then the genomic DNA was extracted from identified specimens, the mtDNA Cytb gene fragment was sequenced and analyzed to determine the species-specific molecular identity. The sandflies collected from Sansha city were identified by molecular marker, and the taxonomic status was discussed. Results A total of 377 sandflies samples were collected in Haikou city, which belonged to 4 species in 2 genera, as Sergentomyia bailyi Sinton, S.iyengari Sinton, S. squamipleuris Newstead, and Phleboto musstantoni Newstead. The sandflies adults were active throughout the year with the peak of density in June and November. The intraspecific genetic distance of mtDNA Cytb gene sequences among the 4 species was from 0 to 0.046. The range of the interspecific distance among the 9 species (including 5 species mtDNA Cytb gene sequences downloaded from NCBI database) was from 0.112 (P. wui with P. chinensis) to 0.219 (P. stantoni and P. caucasicus). All sandflies specimen collected from Sansha city were S. bailyi by molecular identity. The most genetic distance was 0.049 between Haikou and Sansha population. Conclusion Sandflies were active throughout the year in Haikou city, including two peaks of density. The identity of mtDNA Cytb gene sequences of 4 common sandflies in Hainan province was identified. There was obvious genetic divergence in S. bailyi populations.
  • Molecular identification of common cockroaches in China
    CHEN Hong-na, CHU Hong-liang, LIU Da-peng, ZHOU Ming-hao
    Chines Journal of Vector Biology and Control. 2018, 29(1): 20-22. https://doi.org/10.11853/j.issn.1003.8280.2018.01.005
    Abstract ( 368 ) Download PDF ( 1405 )   Knowledge map   Save
    Objective To provide basis for future molecular identification methods of cockroach species by analyzing gene sequences of cytochrome C oxidase subunitⅠ(COⅠ) among 15 cockroach species. Methods The mitochondrial COⅠ gene sequences of cockroaches were searched by NCBI and the sequence alignment was carried out by DNAStar software. An evolutionary divergence and a Neighbor-Joining tree were constructed using MEGA 6.0 software. Results The average interspecific genetic distances among 15 species of cockroaches in China was 0.166, and the genetic distances among species were significant. Phylogenetic tree analysis showed that COⅠ molecular markers were the same as traditional morphological classification, and the confidentiality more than 91. Conclusion The COⅠ gene can be effectively used to distinguish some species of domestic cockroaches. The value of 658 bp region of the mitochondrial COⅠ gene for identification of genus or subspecies is limited.
  • Identification of Ceratinoptera picta: a non-recorded cockroach species in China intercepted at Zhongshan port, China
    WEI Xiao-ya, LIU De-xing, QIU De-yi, YUE Qiao-yun
    Chines Journal of Vector Biology and Control. 2018, 29(1): 23-26. https://doi.org/10.11853/j.issn.1003.8280.2018.01.006
    Abstract ( 335 ) Download PDF ( 1990 )   Knowledge map   Save
    Objective To identify the intercepted cockroach rapidly and accurately. Methods We tried to identify the male cockroach intercepted from an entry ship at Zhongshan port on February 24, 2017 with morphology, then DNA barcodes. DNA barcodes was submitted to the GenBank and the morphological characteristics of the intercepted sample were illustrated as well. Results The male individual was identified as Ceratinoptera picta, belonging to Ectobiidae, Blattodea. Ceratinoptera picta is a non-recorded species in China and it is intercepted for the first time at Chinese ports based on Sci-Tech novelty search. Conclusion DNA barcoding is a strong supplement to morphology. At present, DNA Barcoding Data system needs to be replenished and provides references for the future use. Combining morphology and DNA barcoding techniques is suggested in identification of intercepted cockroach rapidly and accurately.
  • Study on insecticide resistance dynamics to beta-cypermethrin in Blattella germanica collected from different districts, Beijing
    WEI Xu-qiang, ZHOU Xiao-jie
    Chines Journal of Vector Biology and Control. 2018, 29(1): 27-29. https://doi.org/10.11853/j.issn.1003.8280.2018.01.007
    Abstract ( 351 ) Download PDF ( 1094 )   Knowledge map   Save
    Objective To understand the resistance dynamics of Blattella germanica to commonly used insecticide beta-cypermethrin, and provide the basis for the integrated pest management in different districts. Methods Insecticide resistance of 11 field strains B. germanica collected from hotels, gasthaus, farmer's markets, and small restaurants in Dongcheng, Xicheng, Chaoyang, Changping, Miyun, Huairou, Daxing, Shijingshan, Shunyi, Fangshan, and Mentougou district in 2014 and 2016, during May to July each year, were detected by surface contact method. The resistant ratio (RR) was calculated for each strain. Results The susceptibility of the field B. germanica strains to insecticide tested varied from different districts. The Dongcheng, Miyun, Huairou, Daxing, Xicheng, and Changping strains showed decreasing susceptibility to beta-cypermethrin, but Shijingshan, Chaoyang, Shunyi, Fangshan, and Mentougou strains showed increasing trend. The 11 field strains of B. germanica had low levels of resistance with RRs between 1.01 and 5.14 folds in 2014 and 2016 to beta-cypermethrin, except Shunyi strains with moderate resistance in 2014. The resistance change of Dongcheng and Mentougou stains was the widest, RR increased from 2.39 to 4.44 folds in Dongcheng strain, while RR decreased from 4.58 to 2.73 folds in Mentougou strain. Conclusion Field collected strains of B. germanica in different districts in Beijing had already developed different levels of resistance to beta-cypermethrin in 2014 and 2016. Based on the integrated pest management strategy, insecticides should be applied reasonably according to the local resistance surveillance results to control the cockroach effectively.
  • Resistance of Culex pipiens quinquefasciatus and Aedes albopictus to four insecticides in Guiyang, China
    LIANG Qiu-guo, WEN Sai, YANG Xi, WU Ya-nan, CHENG Jin-zhi, ZHU Ru-fang, WU Jia-hong
    Chines Journal of Vector Biology and Control. 2018, 29(1): 30-33. https://doi.org/10.11853/j.issn.1003.8280.2018.01.008
    Abstract ( 356 ) Download PDF ( 1180 )   Knowledge map   Save
    Objective To understand the insecticide resistance status of Culex pipiens quinquefasciatus and Aedes albopictus in Guiyang, China, to provide scientific basis in rational use of chemical insecticides for management of mosquito-borne diseases. Methods Larval mosquitoes of Cx. pipiens quinquefasciatus and Ae. albopictus were collected in 5 districts and 3 counties of Guiyang, and were reared in the insectary. The larvae dipping method was used to detect the insecticide resistance to the four insecticides. Results The resistance ratios of Cx. pipiens quinquefasciatus larvae to dichlorvos, parathion, beta-cypermethrin, and deltamethrin were 5.07-10.79, 8.16-10.20, 13.92-27.22, and 100.00-226.32 fold. The resistance ratios of Ae. albopictus larvae to the four insecticides were 7.61-25.69, 4.76-28.57, 6.42-76.19, and 14.75-59.02 fold. Conclusion Culex pipiens quinquefasciatus and Ae. albopictus larvae in Guiyang have developed certain resistance, in which the mosquito had a higher resistance to pyrethroid insecticides. We suggest reducing or avoiding pyrethroid insecticides for a single, extensive and long-term use, and to strengthen the insecticide resistance surveillance for better mosquito prevention and control.
  • Primary characterization of platelet activation derived from mice infected by Babesia microti
    PAN Zhi-hua, ZHENG Chen, CHEN Jia-xu, ZHENG Kui-yang, LIU Xiang-ye
    Chines Journal of Vector Biology and Control. 2018, 29(1): 34-37. https://doi.org/10.11853/j.issn.1003.8280.2018.01.009
    Abstract ( 294 ) Download PDF ( 991 )   Knowledge map   Save
    Objective To characterize platelet activation and its correlations with parasitemia in peripheral blood of mice infected by Babesia microti. Methods BALB/c mice were intraperitoneally inoculated with B. microti infected blood, which was collected, heparinized, and diluted with sterile saline to achieve a 30% RBC parasitic infection rate. Following the infection, anti-coagulated peripheral blood was collected from the mice at each day. The blood was stained with anti-CD61 and anti-CD62P antibodies, and then used to analyze the activation of platelet with flow cytometry. Furthermore, the percentage of parasitized red blood cells was determined via Giemsa-stained thin blood films. Finally, Pearson correlation analysis was used to evaluate the correlation of platelet activation and parasitemia. Results The percentage of platelet activation started to increase on the second day post infection, reached the peak on the third day[(15.50±0.17)%], and declined from the fourth day, but was absence of obvious regularities. The percentage of parasitized red blood cells gradually ascended post infection and reached the peak at the eighth day[(63.10±3.43)%], and then declined. However, there was no significant difference between the percentage of platelet activation and parasitized red blood cells, which was characterized by Pearson correlation analysis (P>0.05). Conclusion The platelet activation can be induced by B. microti infection, but it has no significant correlation with parasitemia.
  • Hantavirus detected from small mammals in the China-Kazakhstan border
    YIN Xiao-ping, SONG Feng-lin, ZHAO Shan-shan, TIAN Yan-he, BA Te-er, CHENG Tian-li, ZHANG Jiang-guo, GAO Yu-feng
    Chines Journal of Vector Biology and Control. 2018, 29(1): 38-41. https://doi.org/10.11853/j.issn.1003.8280.2018.01.010
    Abstract ( 317 ) Download PDF ( 1486 )   Knowledge map   Save
    Objective To determine the infection rate of hantavirus in rodents and provide basic data for the prevention and control of hemorrhagic fever with renal syndrome(HFRS) at China-Kazakhstan border railway extension line area. Methods Night trapping and arch clamp methods were applied to monitor population structure of rodents at China-Kazakhstan border railway extension line area, 95 mice's lung tissues were randomly selected to extract the RNA, and corresponding cDNA was synthesized by reverse transcription. All of 95 samples were detected by PCR targeting hantavirus. The amplified products were sequenced and analyzed. A phylogenetic tree was constructed using MEGA 6.0 software. Results Twenty-four (11 Rhombomys opimus, 4 Meriones libycus, 4 M. meridianus, 4 M. tamariscinus, 1 Cricetulus migratorius) samples were positive (24/95, 25.26%) for hantavirus. DNAman alignment analysis on 24 positive sequences, indicated that there are 6 different genotypes, and the homology was 98.41%. BLAST analysis showed that six sequences exhibited 98.09% to 98.33% similarity with the corresponding sequences of Seoul virus. The phylogenetic tree revealed that the Hantavirus agents were found in rat cluster with Seoul virus DPRK08. Conclusion Hantavirus infection was found in rodents at China-Kazakhstan border railway extension line area. The prevention and control of hantavirus in rodents should be strengthened to ensure port health safety and to prevent outbreak of the HFRS epidemic in the port area.
  • Species identification of Anopheles mosquitoes from the Tumen river basin in Yanbian area of Jilin province based on morphological and molecular characteristics
    LI Ji-xu, SONG Zhen-hai, PIAO Guang-ming
    Chines Journal of Vector Biology and Control. 2018, 29(1): 42-46. https://doi.org/10.11853/j.issn.1003.8280.2018.01.011
    Abstract ( 299 ) Download PDF ( 1346 )   Knowledge map   Save
    Objective To understand the species of Anopheles mosquitoes in the Tumen river basin in Yanbian area of Jilin province, and master the morphological and gene characteristics of common Anopheles mosquitoes. Methods The three border towns were chosen in the Tumen river basin in Yanbian area, Yueqing, Qushui, Kaishan in 2012-2013. From May to October every year, the black light trap was used to collect the female adult of Anopheles monthly, from which the genome DNA was extracted. The PCR gene identification technique was used to identify the Anopheles species according to the characterization of its ribosomal nucleic acid internal transcribed spacer 2 segment (rDNA ITS2) gene. The genome DNA amplification products of Anopheles were sequenced, and homology analysis with gene sequence of Anopheles in GenBank of NCBI was carried out to further determine the genetic characteristics of Anopheles mosquitoes in Tumen river basin of Yanbian area. Finally, according to the molecular identification results, reverse analyses was conducted to provide the confirmation for morphological classification. Results Five Anopheles species including An. hycranus group An. sineroides, An. kleini, An. lesteri, An. pullus, and An. belenrae were found in the study area, and the homology between their genomic DNA amplification sequences and that of Anopheles published in GenBank reached 97%-100%. The subcostal, preapical, apical fringe and fringe had obvious species specificity in morphology among An. kleini, An. lesteri, and An. pullus. Conclusion Anopheles sinensis and An. koreicus were not found in Tumen river basin of Yanbian area, An. belenrae was found for the first time in this area and became the new recorded species with An. kleini. The initial recorded species of An. anthropophagus was revised to An. lesteri. The An. yatsushiroensis was revised to An. pullus. According to the white as spots of wings as species specificity of female adults Anopheles mosquitoes, we can identify the morphology of new and related species rapidly and conveniently, such as An. kleini, An. lesteri, and An. pullus.
  • Investigation on population and density of Anopheles mosquitoes in Jiangsu province
    LI Ju-lin, ZHU Guo-ding, ZHOU Hua-yun, TANG Jian-xia, YANG Guo-jing, CAO Jun
    Chines Journal of Vector Biology and Control. 2018, 29(1): 47-49. https://doi.org/10.11853/j.issn.1003.8280.2018.01.012
    Abstract ( 361 ) Download PDF ( 1335 )   Knowledge map   Save
    Objective To analyze the trend of population and density of Anopheles mosquitoes, the malaria vectors, in Jiangsu province. Methods Anopheles mosquitoes were collected by half night human baiting and overnight light trapping from July to September in 2015 in south, north and part of middle Jiangsu counties and districts. The biting rates and the density of light trapping were analyzed. Results A total of 1 942 Anopheles mosquitoes were collected on 11 surveillance sites from July to September in 2015 by half night human baiting. All collected Anopheles mosquitoes were identified as An. sinensis. The biting rates of An. sinensis for the first ten days and last ten days each month during July to September were 3.93, 4.79, 3.22, 2.31, 1.23, and 0.71 mosquitoes/person·hour, among which the rates during 19:00 to 24:00 were 2.73, 3.15, 2.81, 2.65, and 2.16 mosquitoes/person·hour. Using overnight light trapping, 3 602 Anopheles mosquitoes were collected and identified as An. sinensis. The indoor density of An. sinensis for the first ten days and last ten days each month during July to September were 5.61, 7.45, 8.10, 3.88, 1.85, and 0.94 mosquitoes/night·light, while the outdoor density were 16.30, 18.10, 25.03, 15.94, 5.76, and 4.09 mosquitoes/night·light. Conclusion The malaria vector in Jiangsu province is An. sinenesis. The peak of activity for An. sinensis is from late July to early August. The activity frequency of An. sinensis is higher in the first half night, especially during 20:00-21:00. Anopheles sinensis stays outdoor longer than indoor. To reduce the mosquito-borne diseases among residents, the health education on mosquito prevention is needed to be strengthened.
  • Dynamic changes of trehalose and trehalase in female Anopheles sinensis Wiedemann (Diptera: Culicidae)
    LIU Li-juan, HU Ying-xin, LI Ya-ping, CHENG Peng, GUO Xiu-xia, GONG Mao-qing
    Chines Journal of Vector Biology and Control. 2018, 29(1): 50-52. https://doi.org/10.11853/j.issn.1003.8280.2018.01.013
    Abstract ( 336 ) Download PDF ( 1290 )   Knowledge map   Save
    Objective To understand the dynamic changes of trehalose and trehalase of Anopheles sinensis. Methods Enzyme-linked immunosorbent assay (ELISA) was used to detect trehalose and trehalase contents of female adult. ANOVA was used to determine the statistical significance of trehalose and trehalase contents. Subsequently, Tukey's multiple comparison was applied for significance analysis. Results The results showed that the trehalose and trehalase of female An. sinensis increased first and decreased there after post adult emergence. The females after oviposition had lower levels of trehalose and trehalase contents. The contents of trehalose which reached the peak approximately on the second day in adult stage[(2.658 5±0.116 5) mg/g] were significantly different (F=21.383, df=100, P<0.05). However, the contents of trehalase reached the peak stage approximately on the third day in adult stage[(0.111 6±0.002 5) μmol/g]. Conclusion The trehalose and trehalase contents of female An. sinensis have a regular pattern, which is related to the energy accumulation and consumption.
  • Development of information management system software for vector surveillance in Hebei province
    MA Li-hua, HUANG Gang, GAO Wen, WANG Yan, HAN Xiao-li, GAO Gui-jun, WANG Xi-ming
    Chines Journal of Vector Biology and Control. 2018, 29(1): 53-60. https://doi.org/10.11853/j.issn.1003.8280.2018.01.014
    Abstract ( 473 ) Download PDF ( 1653 )   Knowledge map   Save
    Objective A software for information management system of vector surveillance has been developed and used for the storage, management and query of the vector surveillance data of disease control and prevention at provincial, municipal and county levels in Hebei province. Methods The system is based on Eclipse development platform, and uses MySQL database and related development tools to build the software interface based on Windows operating system, and allows the inputs of field surveillance data and information to the database. Results The software can realize the functions of information input, retrieval query, statistics and user management. The vector surveillance data of disease control and prevention institutions at provincial, municipal and county levels of the system can be automatically collected, counted and displayed, a dynamic management process can be implemented. Conclusion The development of the software can realize the collection, management, analysis and quality control of surveillance data, plays a positive role in improving vector surveillance work efficiency and quality, and providing supportive information for vector control and the health administrative authorities.
  • Study on the drug and disinfectant resistant genes of Yersina pestis in natural plague foci in Tibet
    HE Jian, YANG Xiao-yan, LI Sheng, JIN Juan, ZHANG Qi, XIN You-quan, JIN Yong, XIONG Hao-ming, YANG Han-qing, WEI Bai-qing, DAI Rui-xia, QI Zhi-zhen
    Chines Journal of Vector Biology and Control. 2018, 29(1): 61-63. https://doi.org/10.11853/j.issn.1003.8280.2018.01.015
    Abstract ( 343 ) Download PDF ( 1428 )   Knowledge map   Save
    Objective To understand whether there is a drug-or disinfectant-resistant strains in natural plague foci in Tibet, and provide the accurate information for clinical treatment of plague. Methods According to the aminoglycoside resistant gene of streptomycin resistant, StrB, StrA, beta lactam antibiotics TEM, SHV, and CTX-M gene, sulfamilamide resistant Sul1, Sul2, and Sul3, and anti-disinfectant QacEdeltal-sul1 gene sequence the National Center for Biotechnology Information (NCBI) released,a pair of primers in each gene was designed separately. DNA of strains isolated from natural plague foci in Tibet were amplified by PCR using every pair of primers. Results Negative and positive control were established, samples by PCR amplification results were negative, there were no streptomycin, sulfamilamide and beta lactam antimicrobial drug resistance genes and anti-disinfectant genes in strains studied. Conclusion The Tibet autonomous region of natural plague foci did not appear to have drug-or disinfectant-resistant Yersina pestis.
  • Survey on the plague literacy of residents in the plague foci in Hebei province, 2016
    NIU Yan-fen, ZHANG Yi-hui, YAN Dong, LI Lin-chen, LIU He-zhi, HU Le-le, CHEN Kai-le, SHI Xian-ming, GAO Bao-ping
    Chines Journal of Vector Biology and Control. 2018, 29(1): 64-67. https://doi.org/10.11853/j.issn.1003.8280.2018.01.016
    Abstract ( 308 ) Download PDF ( 1212 )   Knowledge map   Save
    Objective To understand the plague literacy status among residents in the plague foci in Hebei province, and provide scientific basis for the health education strategies of plague. Methods Two hundred and eighty residents over the age of 18 were selected randomly for questionnaire survey in two communities of Kangbao county; The χ2 test and Fisher's exact probability method were used to analyze the results. Results The overall level of health literacy related to plague of residents in Kangbao county was 32.26%. The percentages of residents who had the basic health knowledge and concept was 33.18%, healthy lifestyle and behavior was 52.53%, and health related skills was 11.06%. The differences of health literacy related to plague were statistically significant among residents in different sex groups (χ2=13.007, P<0.001), age groups (χ2=8.409, P=0.015), occupations groups (χ2=12.489, P=0.005), and level of education groups (χ2=44.717, P<0.001). Among them the women, over 60 years old, farmers, workers and low-education residents had low levels of health literacy. Conclusion In the future, we need to strengthen the health education of plague for the elderly, the workers and individuals withlower education level.
  • Fauna resource investigation of Tachinidae in Hebei province, China. Part 2
    SUN Qi, LI Bing, ZHANG Chun-tian
    Chines Journal of Vector Biology and Control. 2018, 29(1): 68-72. https://doi.org/10.11853/j.issn.1003.8280.2018.01.017
    Abstract ( 380 ) Download PDF ( 1790 )   Knowledge map   Save
    Objective To investigate Fauna resource of Tachinidae (Insecta:Diptera) in the Nature Reserves of Hebei province, China. Methods We collected 312 tachinid specimens in some Nature Reserves of Hebei province from July 5th to 18th, 2016, identified by comparative morphology, taxonomy, and zoogeography. Results A total of 66 species, 43 genera, 13 tribes, and 4 subfamilies were recognized. Among them, one species was newly recorded in China, Atylostoma tricolor (Mik, 1884); twenty-six tachinid species were newly recorded for Hebei province. Conclusion Hebei province belongs to North China subregion of Palaearctic region in zoogeography. Because of complex diversity of land form sand vegetation, so Tachinidae resources are richer in Hebei province.
  • Survey of Ceratopogonidae from Dayaoshan National Nature Reserve of Guangxi Zhuang Autonomous Region
    DUAN Chen, HAN Xiao-jing, CHANG Qiong-qiong, HOU Xiao-hui
    Chines Journal of Vector Biology and Control. 2018, 29(1): 73-75. https://doi.org/10.11853/j.issn.1003.8280.2018.01.018
    Abstract ( 347 ) Download PDF ( 1485 )   Knowledge map   Save
    Objective To investigate the species and geographic distribution, community composition of Ceratopogonidae in Dayaoshan National Nature Reserve of Guangxi Zhuang Autonomous Region, China. Methods The investigation of Ceratopogonidae was conducted in Dayaoshan National Nature Reserve of Guangxi Zhuang Autonomous Region from July 18-22, 2015. The light (photocatalyic UV trap lamp) trap and insect net were used to capture midges, which were classified and identified. Results There are 6 genera, 18 species biting midges from Dayaoshan National Nature Reserve, including 2 genera and 10 species in the subfamily Ceratopogoninae, 1 genera and 2 species in Dasyheleinae, and 3 genus and 6 species in Forcipomyiinae. We have found 11 new record species in Guangxi, including Dasyhelea jingboi,Forcipomyia distapalpis, Atrichopogon okinawensis, A. dehiscentis, A. jianfengensis, Culicoides orientalis, C. indianus, C. innoxius, C. lansangensis, C. pictimargo, and Stilobezzia alba. Conclusion This paper enriches the species diversity of Ceratopogonidae and provides basic data for the prevention and control of midge-borne viral diseases and blood sucking midges.
  • One new species and one new record of Dasyhelea from China (Diptera: Ceratopogonidae)
    MAHE Mu-ti, ZHANG Jian, GAO Zhen-guo, ZHANG Xiao-bing, ZHANG Song, YU Yi-xin
    Chines Journal of Vector Biology and Control. 2018, 29(1): 76-77. https://doi.org/10.11853/j.issn.1003.8280.2018.01.019
    Abstract ( 376 ) Download PDF ( 1281 )   Knowledge map   Save
    This paper dealt with two species of Dasyhelea, of which one, Dasyhelea auli Remm,1962, is recorded for the first time from China and one, D. biungula Ma et Yu, new species, is described as new to science. Type specimens are deposited in the Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences and Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention.
  • The positive role of pest control operations in post-disaster epidemic management
    SUN Yang-xin
    Chines Journal of Vector Biology and Control. 2018, 29(1): 78-79. https://doi.org/10.11853/j.issn.1003.8280.2018.01.020
    Abstract ( 330 ) Download PDF ( 1704 )   Knowledge map   Save
    During recent years, pest control operations (PCO) have been growing rapidly in China. Participation of PCOs is needed in daily pest control services and establishment of hygienic city. Following disasters such as earthquake, land slide, flood, etc., effective epidemic preventions are crucial, which must be launched in a timely manner. PCO companies are passionate in public services and social responsibility, and are experienced in field disinfection and insecticide application. Therefore, PCOs should be encouraged and guided to play a positive role in disease control services in disaster areas.
  • An investigation report on dengue fever outbreak in Daozhen county, Guizhou province, China
    TIAN Zhen-zao, HU Can, ZHOU Jing-zhu, ZOU Zhi-ting, LI Fa-jin, GUO Jun, HUANG Hong-wu, YU Duo, YAO Gang, LENG Yuan-qiang, ZENG Di-min, YANG Guo-jun, GUO Huang-ji
    Chines Journal of Vector Biology and Control. 2018, 29(1): 80-82. https://doi.org/10.11853/j.issn.1003.8280.2018.01.021
    Abstract ( 326 ) Download PDF ( 1507 )   Knowledge map   Save
    Objective To investigate epidemiological characteristics of imported dengue fever in Daozhen county, the species and density of local Aedes mosquitoes, and provide basis for prevention and control. Methods Epidemiological investigation was carried out on dengue fever cases and other returnees in July 2016. The dengue IgM antibody of the serum returnees were detected by ELISA, and investigating the Aedes mosquitoes in the town where the cases reside was carried out by human baiting and Breteau index(BI). Results There were 5 clinical cases, 2 suspected cases, 1 asymptomatic infection among all 26 returnees from Maldives, with morbidity rate 30.77%. Six sera were positive for dengue IgM antibody, 7 cases were treated and recovered. Other 19 asymptomatic individuals were quarantined for 14 d, and no new clinical cases emerged. Investigating the Aedes mosquitoes in towns of Yuxi, Hekou, and Zongping revealed that landing rate on human was 2.4, the mosquito density was more than C level (human landing rate less than 1.5). BI was 7.0, slightly higher than the threshold for the spread of dengue fever (BI ≤ 5). Conclusion An imported dengue fever outbreak from Maldives occurred in Daozhen county in 2016. There was no secondary dengue transmission locally, because of the effective preventive measures.
  • Risk assessment and epidemic prevention and control strategy of rabies in Shunyi district of Beijing, China
    FENG Ran, HE Chao, WANG Feng-shuang, HUANG Rong
    Chines Journal of Vector Biology and Control. 2018, 29(1): 83-87. https://doi.org/10.11853/j.issn.1003.8280.2018.01.022
    Abstract ( 349 ) Download PDF ( 1755 )   Knowledge map   Save
    Objective To understand the current situation of rabies incidence and exposure in Shunyi district of Beijing,and evaluate the risk of rabies, discuss the prevention and control strategy of rabies, and provide scientific evidences for prevention and control measures against rabies for the residents. Methods Retrospective the history of rabies incidence data since beginning of the records in Shunyi district, epidemiological analysis was carried out on the surveillance data on populations exposed to rabies in rabies immune prevention clinics during 2002-2016 and cases of single dog causing many injuries during 2010-2016. Results A total of 26 cases of rabies were reported in Shunyi district during 1960-2016,including 6 cases during 2010-2016; animal-wounded cases were 124 019 from 2002 to 2016, the ratio male cases to female ones was 1.26:1, and the male cases were higher than female ones (χ2=228.450,P<0.05). There was an obvious seasonal peak in summer, 54 665 cases (44.10%) occurred during May to August. Lower limbs and hands were most vulnerable to be bitten, which was 100 955 cases (81.40%). The majority of the injured were middle-aged and young, accounting for 51.13%, workers and peasants (32.68%) accounted for the most, followed by staff (30.91%). More than 75% of cases were caused by dogs, and only 35.58% of which the owner can be found have been vaccinated against rabies within one year. A total of 49 356 cases (50.08%) of rabies-exposed people were grade Ⅲ exposure during 2008-2016, while there were 8 432 cases (17.08%) of which received passive immunization. The rate of passive immunity remained low, only reaching 32.56% in 2009 but 20% in other years. During 2010-2016, 20 cases of single dog causing many injuries were reported, among which 44 people from 8 occurrences were followed for the whole course of vaccination, and accounted for 90.91%. Conclusion Dogs should be managed strictly and vaccinated in a timely manner. Popularizing the knowledge of rabies prevention and control and promptly disposing of rabies exposure in accordance with standards are critically important. It is suggested to add clinics of secondary hospital or above to treat the wounds, to establish surveillance mechanism for full vaccination of rabies. It is suggested that the government should further incorporate the cost of medical treatment for the injured personnel into the scope of the NCMS and the urban medical insurance. Long-term monitoring mechanism for animal rabies should be established. Collaborative efforts are needed among health, police department, animals supervising agencies and other members of dog management.
  • Investigation on infrastructure and service ability of rabies post-exposure prophylaxis clinics in Tianjin, China
    LIU Yi-fang, LYU Jie, SU Cheng, LI Lin
    Chines Journal of Vector Biology and Control. 2018, 29(1): 88-90. https://doi.org/10.11853/j.issn.1003.8280.2018.01.023
    Abstract ( 320 ) Download PDF ( 1234 )   Knowledge map   Save
    Objective To master the current situation of infrastructure and service ability of rabies post-exposure prophylaxis (PEP) clinics in Tianjin and provide evidence for rabies control. Methods All PEP clinics were investigated. The contents included area settings, clinic management, human resources, facilities, and service ability and the data collection of exposure cases. Results There were 95 clinics (grade A 18, grade B 77) in Tianjin, 86 clinics were set up in medical institutions while the others were in the CDC. Each clinic had an average of 3 nurses, 5 doctors, and all the staff in medical institutions were part-time. About 20% of the clinics' services had defects in the district assignment, hardware facilities, and the outpatient registration, especially in the clinics of grade B. All medical personnel have been trained and evaluated for their responsibilities. A total of 95 951 persons (first visit) were admitted to the hospital throughout the year, and there was a great gap between different clinics. Conclusion The construction of animal injury treatment clinic in our city has achieved initial success, but there are still problems. The management of some outpatient departments should be strengthened.
  • Analysis on the cockroach surveillance in 2006-2015, Lanzhou city
    WU Zhao, YANG Li, LIU Xu-hong, LI Zhi-ping, JIA Yu-xin
    Chines Journal of Vector Biology and Control. 2018, 29(1): 91-93. https://doi.org/10.11853/j.issn.1003.8280.2018.01.024
    Abstract ( 405 ) Download PDF ( 1066 )   Knowledge map   Save
    Objective To determine the population distribution and seasonal dynamics of cockroaches for effective prevention and control in Lanzhou city, Gansu province, China. Methods We used glue boards to catch the Blattella (cockroaches). We selected 3 survey sites in Lanzhou city and placed the glue boards at the 15th of each month from 2006 to 2015. For each site, the investigators randomly selected two catering establishments, one farm product market, one hotel, one hospital and one residential area. All the sites were relatively fixed. The correlations between cockroach density and infestation rate were tested by one-sample Kolmogorov-Smirnov test and Bivariate Correlations. Results From 2006 to 2015, we placed 21 600 glue boards at chosen sites, and retrieved 21 126 boards, which caught 43 685 cockroaches. They were all B. germanica. The infestation rate was 13.86% and the average density was 2.07 per board. The density of farm product markets was the highest (3.28/board) and hospital was the lowest (0.26/board). The infestation rate of cockroach was positively associated with the density (r=0.892, P<0.01). Conclusion Blattella germanica was the predominant species in Lanzhou city. The population density peak was from June to October during 2006 to 2015. We should take measures to control cockroaches in April and May before the onset of the cockroach density peak.
  • Epidemiological analysis of human brucellosis in Bay county in Xinjiang Uygur Autonomous Region, 2015
    KEYOUMU·Ayixiamu, AISHAN·Muhetaer, LU Zhong-rong, TAXITIEMUER·Aierken
    Chines Journal of Vector Biology and Control. 2018, 29(1): 94-96. https://doi.org/10.11853/j.issn.1003.8280.2018.01.025
    Abstract ( 450 ) Download PDF ( 1085 )   Knowledge map   Save
    Objective To understand the epidemic situation of human brucellosis in Bay county in Xinjiang Uygur Autonomous Region (Xinjiang), China in 2015 and provide the scientific basis for controlling human brucellosis in the future. Methods The data of human brucellosis were collected from all 16 towns in Bay county which had serological examination in persons with clinical symptoms and contact history from February 23 to September 18, 2015. The positive rate was compared with Chi square test. Results Serological detection was performed on 920 samples, of which 125 samples produced positive results (serum test positive rate 13.59%), the average prevalence was 12.93%, and the asymptomatic infection rate was 0.65%. Bulong and Yatur township prevalence rates were 37.50% and 33.33% respectively. The positive rate of serological test in males was 15.68%, higher than that in females 10.41% (χ2=5.198,P=0.023). The positive rates of serological test in students, herdsmen and farmers were 18.42%, 14.47%, and 14.17% respectively. Conclusion The high positive rate of serological test for brucellosis in Bay county warrants attention by the local government and the administrative departments of health. The emphases of infection populations were students, young farmers and herdsmen occupational groups, so we should carry out extensive health education about knowledge of brucellosis prevention, focusing on local schools and agricultural and pastoral areas to strengthen prevention and control measures.
  • Surveillance on Culex tritaeniorhynchus in Jingdezhen city, 2010-2014
    LI Yu-qiang, XU Zhong-ji
    Chines Journal of Vector Biology and Control. 2018, 29(1): 97-99. https://doi.org/10.11853/j.issn.1003.8280.2018.01.026
    Abstract ( 332 ) Download PDF ( 1198 )   Knowledge map   Save
    Objective To acquire the density and seasonal fluctuation information of Culex tritaeniorhynchus in Jingdezhen city, and provide data for following study. Methods Light traps were used to get surveillance data from residential areas, parks, hospitals, farmyards and livestock sheds in Jingdezhen city twice per month between 2010 and 2014. LSD-t and SNK-q were used to analyze the data by SPSS 19.0. Results Culex tritaeniorhynchus was the predominant mosquito specie in Jingdezhen, accounting for 51.26% of the mosquito population. The declining trend in 2010 to 2014 was significant (y=-749.1x+1 509 397.4, R2=0.917, P=0.010). The temporal distribution of Cx. tritaeniorhynchus showed a single peak in June, which the density was 3.28 per light per night. Although the density in livestock sheds and farmyards was much higher than other habitats, the declining trend kept the same. The maximum peak in June appeared in all habitats while the farmyard had a secondary peak in August. Conclusion In this study, we acquired the density, habitat, interannually fluctuation and seasonal variation of Cx. tritaeniorhynchus in Jingdezhen city, and provided the basic data for the follow-up work.
  • Investigation on vectors of main urban areas in Shijiazhuang city, 2016
    ZHAI Shi-yong, LU Chun-mei
    Chines Journal of Vector Biology and Control. 2018, 29(1): 111-111. https://doi.org/10.11853/j.issn.1003.8280.2018.01.030
    Abstract ( 368 ) Download PDF ( 1339 )   Knowledge map   Save
  • Study on variability of Yersinia pestis in plague natural foci of Hebei province, China
    SHI Xian-ming, DU Guo-yi, WANG Zhi-yu, YANG Shun-lin, WANG Hai-feng, ZHOU Song, LIU Guan-chun, XIE Shu-jun, YAO Jian-kun, CUI Shu-xue, YANG Jian-ming, ZHANG Yi-hui
    Chines Journal of Vector Biology and Control. 2018, 29(1): 100-102. https://doi.org/10.11853/j.issn.1003.8280.2018.01.027
    Abstract ( 363 ) Download PDF ( 1204 )   Knowledge map   Save
    At the initial stage of epidemics, the bacteria of plague natural foci were more virulent, nitrogen removal was stable, and the plasmid species were relatively complete and stable. But at the end of the epidemic, the virulence of the plague was weaker, nitrogen removal was not stable, and plasmids tended to be absent. There were great differences in the morphology of plague bacteria in nature. Biological, biochemical, plasmid and virulence of Yersinia pestis were investigated in Hebei province, China. The mechanism of the existence of plague was revealed in some way.
  • Overview on the cerebral ganglions of Oncomelania hupensis
    TAN Ping
    Chines Journal of Vector Biology and Control. 2018, 29(1): 103-106. https://doi.org/10.11853/j.issn.1003.8280.2018.01.028
    Abstract ( 308 ) Download PDF ( 1060 )   Knowledge map   Save
    In the study of molluscicides, and biological and physicochemical factors on snails such as Oncomelania hupensis, the cerebral ganglions are often used as an important target of observation. Different molluscicides or influencing factors may have different effects on cerebral ganglions of O. hupensis in the cell structure, biochemical indexes, and enzymology characteristics etc. This article reviews the general situation about O. hupensis cerebral ganglions in the anatomical method, morphology, histological structure and enzymohistochemistry characteristics etc.
  • Research on information management and application of vector surveillance in Ningbo city, China
    WANG Gui-an, MA Xiao, YANG Si-jia, SUN Bin
    Chines Journal of Vector Biology and Control. 2018, 29(1): 107-110. https://doi.org/10.11853/j.issn.1003.8280.2018.01.029
    Abstract ( 328 ) Download PDF ( 1296 )   Knowledge map   Save
    Objective To improve the analysis and utilization of vector surveillance data, and better monitor the risks of vector-borne diseases. Methods Through the development and construction of Ningbo vector surveillance information system, the surveillance data of virus vector in Ningbo area was fully executed; and analyzed based on internet technology. Results The new method improved the accuracy of the surveillance results, the timeliness of the data analysis report and the utilization value of the surveillance data, reduced the cost of human resources and facilitated the vector surveillance work at the grassroots level. Conclusion The new system is of great significance to the informatization process of vector surveillance, and has a good application value.
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