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A cross sectional survey was carried out by taking 516 mid night blood samples from 206 households in 1,2 and 3 wards of Salyantar village development committee of Dhading district, Nepal with the objective to analyze the epidemiological situation of lymphatic fi lariasis. The main aim of the study was to provide the data essential for the planning, implementation and evaluation of the services to the prevention, control and treatment of lymphatic fi lariasis.Questionnaire survey was conducted for the collection of information of the respondents. Blood samples were collected by means of ear-lobe prick method. Microscopical examination of the collected blood samples revealed 117 positive cases i.e. 22.67%. Males (24.54%) were found to be infected more than females (21.28%) in the ration of 1.2:1. The highest distribution of microfi larial parasites was in the age group >70 years (36.36%) while the least was in the age group ≤10 years (12.37%). The infected youngest person was 4 years old boy and the oldest was 85 years old man. Endemicity rate and crude disease rate was reported to be 44.76% and 22.09% respectively. Illiteracy, lack of awareness about the disease, poor sanitation, carelessness in using bed-nets and health were identifi ed as the major risk factors for fi lariasis.

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A descriptive cross-sectional questionnaire survey on Japanese encephalitis was conducted in Bhaktapur district. Mosquitoes were collected for six months by means of dark activated rechargeable CDC light trap. Out of 884 mosquitoe individuals collected, 73.41 percent were Culex species. The highest numbers of mosquitoes were collected in July and August. There was no significant variation in Culex vectors abundance during six months in three study sites Tathali, Bode and Bhelukhel. Significant correlation was found between level of knowledge and attitude towards JE prevention. Fair level of practice towards JE prevention but having no good attitude shows that though people are supportive towards JE control.  Journal of Institute of Science and Technology, 2015, 20(1): 112-118