Objective To study the characteristics of indoor mosquitoes, community composition, diversity, and seasonality in the south of Yunnan province, and to prevent local arbovirus infectious diseases. Methods In a village of Dai in Menghai county of Xishuangbanna prefecture in the north of Yunnan province, mosquitoes were captured by overnight trapping with ovitrap light and counted by species from June to October in 2014. Results Total of 15 391 mosquitoes were captured and were classified into 16 species of 5 genus in 3 subfamilies. The predominant species were Culex tritaeniorhynchus and Anopheles sinensis, the predominant index of them were 69.62 and 49.39(D>40). The sub-predominant species were An. argyropus, Cx. pseudovishnui, Cx. fatigans, An. peditaeniatus and An. minimus, the predominant index were 33.71, 31.79, 30.11, 16.88, and 16.48, respectively(D>10). Shannon-Wiener diversity index, Simpson dominance index and Pielo evenness index were 1.47, 0.29, and 0.53, respectively. Statistically analysis found that Cx. tritaeniorhynchus and An. sinensis, Cx. pseudovishnui and An. argyropus, An. peditaeniatus and An. minimus with better fitness. The peak months of indoor mosquitoes were July, August and September. Conclusion The indoor mosquitoes species in the south of Yunnan province were rich with complicated composition of community and approximately equal distribution of the predominant species. The species density of mosquitoes was high and the peak population density lasted for an extended period of time.

Objective To understand the epidemiological characteristics of imported dengue cases in Yunnan during 2004-2014, and provide the scientific information for the effective strategies of dengue control and prevention. Methods The data of imported dengue cases were collected from China Information System for Diseases Control and Prevention during 2004 to 2014. A database was established to analyze the epidemiological characteristics with method of descriptive epidemiology; dengue serotype was detected by RT-PCR.Results From 2004 to 2014, a total of imported cases were 629 (629/2 192, 28.70%) in Yunnan; The imported cases of dengue were mainly reported in Dehong Prefecture (341 cases), Xishuangbanna Prefecture (159 cases) and Kunming city (108 cases); The cases were reported every month, but 85.37% (537/629) of the cases were imported between August and November. Male cases were much more than female, 419 and 210 cases respectively. The occupations of cases mainly were business service people (165 cases), farmers (134 cases) and students (72 cases). Most cases were imported from Myanmar (403 cases) and Laos (132 cases). Four (4) dengue serotypes were found from imported cases; of those DEN-3 was the major type in those from Laos, and DEN-1 in those from Myanmar. Conclusion The imported dengue cases have been on rise in Yunnan, and their major concerns are the border areas with Laos and Myanmar. The above results suggested that colloborative efforts from various agencies should be strengthened to monitor border imported dengue cases in case of dengue outbreak.

Objective To explore the effective strategies for strengthening malaria control and prevention for ethnic minorities in the remote and poor mountainous areas. Methods Community mobilization, biomedical and behavioral intervention for malaria control were undertaken to promote the local residents economical, geographical, informational and cultural accessibility. Results The residents’knowledge on malaria transmission and prevention, symptoms and medical consultation got increased significantly. Compared with the parameters before the intervention，the odds ratios(OR)of people sleeping in insecticide- treated mosquito nets(ITNs)the night before the final evaluation survey, febrile patients seeking medical attention within 24 hours of onset, and utilizing the public health services for treatment were 37.85%(95％CI: 27.69%-51.88%), 22.28%(6.06%-96.87%) and 7.94%(1.78%-49.54%)respectively. The OR of the annual incidence, the smear positive rate of febrile patients and the indirect fluorescence antibody positive rate of people with a history of fever in the past year were 0.16%(0.08%-0.32%), 0.20% (0.10%-0.39%)and 0.34%(0.22%-0.51%)respectively. Conclusion Community mobilization in combination with biomedical and behavioral interventions for the control and prevention of malaria can effectively lower the incidence and prevalence of malaria in the local area.

【Abstract】　Objective　To explore the strategies promoting the use of insecticide?treated mosquito nets （ITNs）among ethnic minority residents by behavior change communication（BCC）. Methods　The knowledge and awareness of target population on malaria control was increased by intensive health education. The environment leading to behavior change was created by community mobilization. High subsidies were supplied and material barriers were overcame. Results　Person?net ratios were changed from 12.67∶1 to 1.64∶1 after intervention. The knowledge known by population on malaria transmission and prevention got improved significantly (P＜0.01). Proportions of people sleeping in nets were increased from 16.11％(95％ confidence interval：14.94%-17.33％) to 87.91％(84.56%-90.74%) (P＜0.01) after intervention. Conclusion　BCC strategies successfully promoted corrective use of ITNs, decreasing malaria incidence and prevalence with other measures together.