An eco-epidemiological analysis of Dengue outbreak in Port Blair, South Andaman Island, India, during 2022.

IF 0.8 4区医学 Q4 INFECTIOUS DISEASES

Journal of Vector Borne Diseases Pub Date : 2024-01-16 DOI:10.4103/0972-9062.393973

Sasmita Rani Jena, M Kaliyamoorthy, T K Bhattacharyya, Kalpana Baruah

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引用次数: 0

Abstract

Background objectives: In Port Blair, the capital of Andaman & Nicobar Islands, in the Bay of Bengal, 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 both 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 to December of 2017-2021 & January to October of 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 whereas Ae. albopictus prefers to breed in medium sized plastic container (20-100 L) and outdoor water receptacles like tyres, flower pots, domestic discarded materials etc.

Interpretation conclusion: By source reduction, indoor space spray and outdoor fogging vector density was controlled which curtailed the transmission and within 8 weeks decreasing trend of dengue cases were noticed. A regular entomological survey is very important to know the seasonality and key breeding habitats of the vector for proper planning of vector control.

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2022 年印度南安达曼岛布莱尔港登革热爆发的生态流行病学分析。

背景目标：在孟加拉湾的安达曼和尼科巴群岛首府布莱尔港，2022 年的季风时期，类似登革热症状的发烧病例突然增多。因此，我们开展了一项调查，以找出疫情爆发背后的流行病学和昆虫学原因：方法：对布莱尔港市政委员会（PBMC）辖区的 24 个病房进行了昆虫学调查，收集了过去六年（2017-2021 年 1 月至 12 月和 2022 年 1 月至 10 月）的流行病学数据和 2022 年的患者详细信息。对流行病学和昆虫学数据进行了时间和地点分析：在疫情爆发期间，轮胎（22.4%）是主要的孳生地，其次是小型废弃物（17.5%）、金属桶（15.3%）和塑料桶（11.7%）。在雨季，近家栖繁殖地（55%）多于家栖繁殖地（45%）。埃及蚁更喜欢在室内大型容器（100-1000 升）中繁殖，如塑料桶、金属桶和水泥罐，而白纹伊蚊则喜欢在中型塑料容器（20-100 升）和室外水容器中繁殖，如轮胎、花盆、家庭废弃物等：通过减少虫源、室内喷雾和室外喷雾控制了病媒密度，从而减少了传播，8 周内登革热病例呈下降趋势。定期进行昆虫学调查对于了解病媒的季节性和主要繁殖地以适当规划病媒控制非常重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vector Borne Diseases INFECTIOUS DISEASES-PARASITOLOGY

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： National Institute of Malaria Research on behalf of Indian Council of Medical Research (ICMR) publishes the Journal of Vector Borne Diseases. This Journal was earlier published as the Indian Journal of Malariology, a peer reviewed and open access biomedical journal in the field of vector borne diseases. The Journal publishes review articles, original research articles, short research communications, case reports of prime importance, letters to the editor in the field of vector borne diseases and their control.