Chadee Dave D, Williams Fiona L R, Kitron Uriel D
Department of Life Sciences, University of the West Indies, St Augustine, Trinidad, West Indies.
Trop Med Int Health. 2005 Aug;10(8):748-54. doi: 10.1111/j.1365-3156.2005.01449.x.
In 1998, Trinidad experienced its first major outbreak of dengue haemorrhagic fever. Data from the Trinidad Public Health Laboratory, the National Surveillance Unit and Insect Vector Control Division, Ministry of Health, Trinidad and Tobago were analysed to determine the impact of vector control measures on the dengue outbreak. Geographical Information Systems (GIS)/Global Positioning Systems (GPS) were used to map cases and to distinguish epidemiological clusters. The Aedes aegypti population densities were higher than the 5% transmission threshold in all counties. The spatial distribution of dengue fever cases was significantly correlated with the heavily populated east-west corridor in the north and several distinctly separate clusters in the western part of the island. The temporal distribution patterns showed significantly more dengue fever cases occurring during the rainy season than during the dry season. This study documents the importance of vector control in the prevention of dengue transmission since no vaccine is currently available, and emphasizes the urgent need to understand better the environmental factors which contribute to the proliferation of this disease vector Ae. aegypti.
1998 年，特立尼达经历了首次登革出血热大爆发。对特立尼达和多巴哥卫生部的特立尼达公共卫生实验室、国家监测股及病媒控制司的数据进行了分析，以确定病媒控制措施对登革热疫情的影响。利用地理信息系统（GIS）/全球定位系统（GPS）绘制病例地图并区分流行病学聚集区。在所有县，埃及伊蚊种群密度均高于 5%的传播阈值。登革热病例的空间分布与北部人口密集的东西走廊以及该岛西部几个明显分开的聚集区显著相关。时间分布模式显示，雨季的登革热病例明显多于旱季。由于目前尚无疫苗，本研究证明了病媒控制在预防登革热传播中的重要性，并强调迫切需要更好地了解促成这种病媒埃及伊蚊繁殖的环境因素。
