An eco-epidemiological analysis of dengue outbreak in Port Blair, South Andaman Island, India.

Autor:	Jena SR; Regional Office for Health & Family Welfare, Kolkata, Ministry of Health & Family Welfare, Government of India, India., Kaliyamoorthy M; Integrated Diseases Surveillance Programme, Department of Health & Family Welfare, Andaman & Nicobar Islands, India., Bhattacharyya TK; Regional Office for Health & Family Welfare, Kolkata, Ministry of Health & Family Welfare, Government of India, India., Baruah K; National Center for Vector Borne Diseases Control, Directorate General of Health Services, Ministry of Health & Family Welfare, Government of India, India.
Jazyk:	angličtina
Zdroj:	Journal of vector borne diseases [J Vector Borne Dis] 2024 Apr 01; Vol. 61 (2), pp. 220-226. Date of Electronic Publication: 2024 Jun 06.
DOI:	10.4103/jvbd.jvbd_144_23
Abstrakt:	Background Objectives: In Port Blair, the capital of Andaman & Nicobar Islands, in the Bay of Bengal, India, there was a sudden increase in fever cases resembling the symptoms of dengue in the monsoon period of 2022. Hence, an investigation was carried out to find out epidemiological and entomological reasons behind the outbreak. Methods: An entomological survey was carried out in 24 wards of Port Blair Municipal Council (PBMC) area, epidemiological data of last six years (January-December 2017-2021 and January-October 2022) and patient details of the year 2022 were collected. Both the epidemiological and entomological data were analyzed concerning time and place. Results: During this outbreak period tyres (22.4%) came out as a major breeding habitat followed by small discarded materials (17.5%), metal drums (15.3%), and plastic drums (11.7%). In rainy season, peri-domestic breeding (55%) was more than the domestic breeding (45%) habitat. Ae. aegypti had a high preference for indoor large containers (100-1000 L) like plastic tank, metal drum and cement tank whereasAe. albopictus prefers to breed in medium sized plastic container (20-100 L) and outdoor water receptacles like tyres, flower pots, and domestic discarded materials. Interpretation Conclusion: By source reduction, indoor space spray and outdoor fogging, vector density was controlled which curtailed the transmission and within eight weeks a decreasing trend of dengue cases was noticed. A regular entomological survey is crucial to know the seasonality and key breeding habitats of the vector for proper planning of vector control. (Copyright © 2024 Copyright: © 2024 Journal of Vector Borne Diseases.)
Databáze:	MEDLINE
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