In order to join virtual sessions, you must be registered and logged-in(Were you registered for the in-person meeting in Denver? if yes, just log in.) 
Note: All session times are in Mountain Daylight Time.

Risk Assessment of the Dengue Virus in Sri Lanka using the Ordination Method

Authors: Naomi Lazarus*, California State University - Chico
Topics: Medical and Health Geography, Hazards and Vulnerability, Asia
Keywords: disease risk, hazard, public health, vector-borne
Session Type: Paper
Presentation File: No File Uploaded


The paper adopts an ecological perspective to study the spatial and temporal trends in vector borne diseases. Social and environmental factors are considered to assess the impacts of the dengue virus in urban, peri-urban, and rural areas in Sri Lanka. Constrained ordination is used to identify the relative contribution of demographic and socioeconomic variables on the prevalence of dengue during an epidemic and non-epidemic year. The constrained factor scores are then mapped to identify clusters of high and low incidences of dengue. The results reveal that mobility of the population contributed significantly to dengue rates in both urban and peri-urban districts. Poverty and literacy had a moderate impact on the spread of the virus, while the age cohort variables of populations under age 5 and 5 to 19 had a negative impact on dengue rates. Precipitation was a factor in the spread of dengue during the non-epidemic year particularly in peri-urban districts. High clusters of dengue rates are found in the densely populated western region and in coastal districts in the northeastern region. A low cluster of dengue is located in rural districts where arid conditions are not conducive to the primary vector. The findings highlight the importance of spatial-temporal approaches to monitor the impacts of vector-borne diseases across districts and regions that are most vulnerable. Findings are published in: Lazarus, N. W. 2019. Multivariate analysis of the dengue virus in Sri Lanka using the ordination method. GeoJournal, doi: https://link.springer.com/article/10.1007/s10708-019-10069-3

To access contact information login