Identifying environmental risk factors for endemic cholera

A raster GIS approach

Mohammad Ali, Michael Emch, J. P. Donnay, Mohammad Yunus, R. B. Sack

Research output: Contribution to journalArticle

Abstract

The bacteria that cause cholera are known to be normal inhabitants of surface water, however, the environmental risk factors for different biotypes of cholera are not well understood. This study identifies environmental risk factors for cholera in an endemic area of Bangladesh using a geographic information systems (GIS) approach. The study data were collected from a longitudinal health and demographic surveillance system and the data were integrated within a geographic information system database of the research area. Two study periods were chosen because they had different dominant biotypes of the disease. From 1992 to 1996 El Tor cholera was dominant and from 1983 to 1987 classical cholera was dominant. The study found the same three risk factors for the two biotypes of cholera including proximity to surface water, high population density, and poor educational level. The GIS database was used to measure the risk factors and spatial filtering techniques were employed. These robust spatial methods are offered as an example for future epidemiological research efforts that define environmental risk factors for infectious diseases.

Original languageEnglish (US)
Pages (from-to)201-210
Number of pages10
JournalHealth and Place
Volume8
Issue number3
DOIs
StatePublished - 2002

Fingerprint

cholera
Cholera
raster
Systems Analysis
environmental risk
risk factor
information system
biotype
Geographic Information Systems
water
Databases
surface water
population density
Bangladesh
Water
inhabitant
infectious disease
contagious disease
surveillance
Population Density

Keywords

  • Cholera risk
  • Environment
  • GIS
  • Spatial analysis

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Development
  • Geography, Planning and Development
  • Health(social science)

Cite this

Identifying environmental risk factors for endemic cholera : A raster GIS approach. / Ali, Mohammad; Emch, Michael; Donnay, J. P.; Yunus, Mohammad; Sack, R. B.

In: Health and Place, Vol. 8, No. 3, 2002, p. 201-210.

Research output: Contribution to journalArticle

Ali, Mohammad ; Emch, Michael ; Donnay, J. P. ; Yunus, Mohammad ; Sack, R. B. / Identifying environmental risk factors for endemic cholera : A raster GIS approach. In: Health and Place. 2002 ; Vol. 8, No. 3. pp. 201-210.
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