Calderón-Arguedas O, Troyo A, Solano ME

Language: Spanish
References: 15
Page: 73-79
PDF size: 39.97 Kb.

ABSTRACT

Introduction: The first dengue outbreak in San José, the capital city of Costa Rica, was documented in 2002 in the community of “La Carpio”, where suitable climatic and social conditions are adequate for the viral transmission. The characterization of breeding sites for Aedes aegypti in this community is essential for the development of strategies for vector control and prevention of dengue transmission.
Material and methods: 369 houses were visited in the 4 sectors of “La Carpio”, and the presence of outdoor and indoor water filled containers was documented. Mosquito larvae were collected, fixed in 70% alcohol, mounted in Hoyer’s Medium, and observed by light microscope.
Results: 242 (65.58%) of the houses showed potential breeding sites for Ae. aegypti. Most of the containers (drums and buckets) were located outdoors (p‹0.05). However, only 19 (5.14%) of the houses had containers positive for Ae. aegypti. The indoor containers more often infested by the vector were flower vases and flowerpots, while the main outdoor positive containers were water drums.
Discussion: Large containers used for water storage were the most frequently infested by Ae aegypti. Sector 4, where the pipe water supply is not a serious problem, showed the highest entomological indices for Ae. aegypti. This could be due to low consumption and exchange of stored water by the population. The utilization of abate in this kind of containers, as well as information and education campaigns are necessary for vector control in this community.

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