Dengue Spatial and Temporal Patterns, French Guiana, 2001
Annelise Trana✉, Xavier Deparisb, Philippe Dussartb, Jacques M. Morvanb, Patrick Rabarisonb, Franck Remyc, Laurent Polidoria, Jacques Gardonb
- aInstitut de Recherche pour le Développement Guyane, Cayenne, Guyane
- bInstitut Pasteur de la Guyane, Cayenne, Guyane
- cCentre Hospitalier de Cayenne,Cayenne, Guyane
- ✉Corresponding author
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Abstract
To study a 2001 dengue fever outbreak in Iracoubo, French Guiana, we recorded the location of all patients' homes and the date when symptoms were first observed. A geographic information system (GIS) was used to integrate the patient-related information. The Knox test, a classic space-time analysis technique, was used to detect spatiotemporal clustering. Analysis of the relative-risk (RR) variations when space and time distances vary, highlighted the maximum space and time extent of a dengue transmission focus. The results show that heterogeneity in the RR variations in space and time corresponds to known entomologic and epidemiologic factors, such as the mosquito feeding cycle and host-seeking behavior. This finding demonstrates the relevance and potential of the use of GIS and spatial statistics for elaborating a dengue fever surveillance strategy.
TL;DRTo study a 2001 dengue fever outbreak in Iracoubo, French Guiana, the location of all patients’ homes and the date when symptoms were first observed were recorded and heterogeneity in the RR variations in space and time corresponds to known entomologic and epidemiologic factors. (Semantic Scholar)