Seasonal Prevalence of <i>Aedes aegypti</i>in Semi-Urban Area of Yangon Region, Myanmar

• 作者: Aye Aye Su Khin Khin Soe Khin Mar Lwin Myat Lwin Htwe Nyo Nyo Aung San San Oo Thida Ei Thin Thin Soe Tin Lay Mon Toe Toe Soe
• 来源期刊: 昆虫学(英文)
• 学科: 医学
• 关键词: Aedes aegypti Infestation Rate Positive Larval Indices South Dagon Township
• 年，卷（期）: 2020,（3）
• 页码范围: 107-116
• 页数: 10页
• 分类号: R51

摘要

Prevalence rate of <i>Aedes aegypti</i> was conducted in 20 houses from semi-urban areas of Yangon Region. Larval surveys were done at indoors and outdoors water containers of five types. Prevalence rate of larval density larvae was investigated monthly by standard indices. The highest infestation rate of the container index (CI) was in June 2018 (56.52%), the second highest was in July 2017 (48.36%) and the lowest rate was in April 2017 (5.07%);those of the Jar index (JI) was highest (36.49%) in June and second highest rate (23.8%) was in October 2017. Reasoning the Metal drum (MI) was highest (13.95%) in June 2018 and second highest (6.25%) was in July 2017. The larval infestation rate of Earthen pot (EI) was highest (42.1%) in July 2017. The larval incident rate in almost all indices showed that the highest rate was at the beginning of monsoon season, in June and July, while in the remaining months, the larval incident rate was found to decrease due to the application of insecticides in the study area by the Township Public Health Department. However, the application of insecticides did not cover all the breeding sites of the mosquitoes, the water puddles under their houses were left to apply the insecticides. The positive larval incident rate was assessed by Household (HI), Container index (CI), Breteau index (BI). The highest and second highest positive larval incident rates were all in June 2018 and July 2017 in all indices, HI (27.3% and 23.4%), CI (56.52% and 48.36%), BI (17.56% and 16.79%) and SI (28.49% and 24.38%) respectively. The lowest rate in all indices was 2.56% (HI), 5.07% (IC), 2.67% (BI) and 1.91% (SI) in April. In this study, the fluctuation of indices of infestation rates and positive larval index value was positively correlated in similar trends in the study months. The reason for difficult control measure depends on the water sources under their houses and remains stagnant throughout the year, even in the dry season. High incident and death rates of the children due to Dengue/Dengue Haemor