Dengue risk mapping in selected public schools in the National Capital Region using geographic information systems

Issue Date

10-2014

Abstract

Dengue risk was mapped using Quantum Geographic Information System (QGIS) based on a dengue vector surveillance study conducted in selected public schools in the National Capital Region (NCR) from March, 2013 to February, 2014. Weekly monitoring of Aedes aegypti and Ae. albopictus using oviposition traps (ovitraps) was conducted in 29 elementary and 27 high schools. The Ovitraps Index (OI) and adult Productivity Index (OvPI) were computed as percentage of ovitraps positive for egg/larva/pupa, and percentage of ovitraps positive for pupa, respectively. High dengue risk was computed as OI≥10% and OvPI≥5% based on monthly means averaged per season: hot dry (March-May 2013), hot wet (June-August 2013), cold wet (September-November 2013) and cold dry (December 2013-February 2014). In the hot dry season, the lowest number of high risk elementary (24%) and high (22%) schools was observed, which were located in the extreme north and south NCR. The number of high risk elementary (79%) and high (78%) schools was highest in the hot and cold wet seasons with an even spatial distribution across NCR. About 2/3 of the schools (elementary (69%) and high (63%)) are high risk in the cold dry season with an even distribution across NCR. These school-based dengue risk maps will be used to develop a dengue early warning systems.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

28

Issue

2

Page

218

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

AEDES AEGYPTI; AEDES ALBOPICTUS; GEOGRAPHICAL INFORMATION SYSTEMS; TRAPS; TRAPPING; PEST CONTROL EQUIPMENT; OVIPOSITION; PHILIPPINES

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