Introduction : Johor Bahru has one of the highest rates of dengue disease in this country in spite of the implementation of COMBI (Communication for Behavioural Impact) in 2001.
Methods : To identify factors contributing to this problem, a case control study was conducted, focusing on risk factors such as the weather (rainfall and temperature), environment and sociodemography. Cases were selected from confirmed dengue cases from January to June, 2006. Controls were selected from patients who had no past history of having dengue illness from Health Clinics in Johore Bahru. Both case group and control group were matched by age and sex. All risk factors were analysed using SPSS version 11.5.
Results : Results from time-series analysis indicated that the cases of dengue illness were related to changes in the minimum temperature (r =-0.149; p