Analytical report of the 2016 dengue outbreak in Córdoba city, Argentina

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Camilo Rotela
Laura Lopez
María Frías Céspedes
Gabriela Barbas
Andrés Lighezzolo
Ximena Porcasi *
Mario A. Lanfri
Carlos M. Scavuzzo
David E. Gorla
(*) Corresponding Author:
Ximena Porcasi | ximena.porcasi@conae.gov.ar

Abstract

After elimination of the Aedes aegypti vector in South America in the 1960s, dengue outbreaks started to reoccur during the 1990s; strongly in Argentina since 1998. In 2016, Córdoba City had the largest dengue outbreak in its history. In this article we report this outbreak including spatio-temporal analysis of cases and vectors in the city. A total of 653 dengue cases were recorded by the laboratory-based dengue surveillance system and georeferenced by their residential addresses. Case maps were generated from the epidemiological week 1 (beginning of January) to week 19 (mid-May). Dengue outbreak temporal evolution was analysed globally and three specific, high-incidence zones were detected using Knox analysis to characterising its spatio-temporal attributes. Field and remotely sensed data were collected and analysed in real time and a vector presence map based on the MaxEnt approach was generated to define hotspots, towards which the pesticide- based strategy was then targeted. The recorded pattern of cases evolution within the community suggests that dengue control measures should be improved.

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