Mapping and Determination of Leptospirosis vulnuerable zone Based on Geographical Information System in Semarang City Sistem Informasi Geografis untuk Pemetaan dan Penentuan Zona Kerawanan Leptospirosis di Kota Semarang

Abstract

Leptospirosis is zoonotic disease, which is caused by Leptospira bacteria and transmitted to human by contact with contaminated animal urine and environment. Semarang City is endemic area of Leptospirosis and increased at least three years. There were 246 Leptospirosis case on October 2009. The aim of this research was to study the ability and usefulness of Geographcal Informatin System for mapping as distribution of Leptospirosis and determination of Leptospirosis vulnuerable zone. This research representing applied with analytic descriptive by using cross sectional design. Result of this research: GIS could be done to analyze physical environment risk factor of Leptospirosis, for examples : settlement, floods area, height, rainfall, soil texture, temperature and humidity. Leptospirosis case in Semarang City predominated by children group and men adolescent. Distribution of Leptospirosis concentrased in Tembalang Sub District and Gayamsari Sub District. Leptospirosis case increased at dry season during July and August. General vulnuerable Leptospirosis zone found in North and North-East territories of Semarang City. High vulnuerable zone large : 73 km2 (18,73 %), medium zone large 251 km2 (65,60 %) and low zone large 61 km2 (15,67 %). Keyword : Geographical Information System, vulnuerable, Leptospirosis, Semarang City