Aedes Larval Indices and Housing Conditions in Urban Area of Ballari – A Descriptive Cross-sectional Study

Anju Mariam Jacob, K Ramesh, Pratibharani Reddy, T. Gangadhara Goud

Abstract


Background: Mosquito-borne diseases are a major public health problem. The larval indices are an important practical predictor of outbreak of vector-borne diseases. The poor quality housing and neglected peri-domestic environments are risk factors for transmission of vector-borne diseases. The artificial collection of water serves as breeding places for mosquitos. According to the WHO, 80% of the world’s population is at risk of vector-borne diseases. Vector-borne disease accounts for more than 17% of all the infectious diseases, causing more than 700,000 deaths annually. Objectives: The objectives of the study were to find the Aedes larval indices in urban field practice area of VIMS, Ballari, and to study the housing conditions in relation to the mosquito breeding places in urban field practice area of VIMS, Ballari. Methodology: A descriptive cross-sectional study was carried out in Millerpet UPHC, Ballari, Karnataka, among houses located in the selected ward for a duration of 3 months. Simple random sampling technique was adopted to select the ward. Based on the estimated sample size, 298 houses were selected by random number method. Descriptive statistics were used to describe housing patterns, waste management, and entomological surveillance. Results: Out of 298 houses surveyed, a total of 2847 potential containers were inspected, and 781 of these were found positive for mosquito larvae. The house index, container index, and Breteau index were 77.85%, 27.43%, and 262.08%, respectively. About 83.9% of household were living in pucca houses and 58.1% of houses had open drains near their houses. Conclusion: Aedes aegypti is breeding in a wide range of artificial containers. To control these mosquitos, the integration of different methods should be taken into consideration and thereby to prevent outbreaks of mosquito-borne diseases.

Key words: Aedes aegypti, breeding sites, container index and Breteau index, house index, housing


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