Spatial diffusion of the 2015–2016 Zika, dengue and chikungunya epidemics in Rio de Janeiro Municipality, Brazil
Spatial diffusion of the 2015–2016 Zika, dengue and chikungunya epidemics in Rio de Janeiro Municipality, Brazil
Data
2019
Autores
Dalvi, A. P. R.
Braga, J. U.
Journal Title
Journal ISSN
Volume Title
Publisher
Epidemiology & Infection
Resumo
Different countries, especially Brazil, that have faced recurrent dengue epidemics for decades
and chikungunya epidemics since 2014, have had to restructure their health services to combat
a triple epidemic of arboviruses – Zika, dengue and Chikungunya – transmitted by the same
vector, mainly Aedes aegypti, in 2015–2016. Several efforts have been made to better under-
stand these three arboviruses. Spatial analysis plays an important role in the knowledge of dis-
ease dynamics. The knowledge of the patterns of spatial diffusion of these three arboviruses
during an epidemic can contribute to the planning of surveillance actions and control of
these diseases. This study aimed to identify the spatial diffusion processes of these viruses
in the context of the triple epidemic in 2015–2016 in Rio de Janeiro, Brazil. Two study designs
were used: cross-sectional and ecological. Sequential Kernel maps, nearest-neighbour ratios
calculated cumulatively over time, Moran global autocorrelation correlograms, and local
autocorrelation changes over time were used to identify spatial diffusion patterns. The results
suggested an expansion diffusion pattern for the three arboviruses during 2015–2016 in Rio de
Janeiro. These findings can be considered for more effective control measures and for new
studies on the dynamics of these three arboviruses.
Description
Palavras-chave
Chikungunya virus, dengue virus, spatio temporal analysis, Zika virus
Citação
Dalvi APR, Braga JU (2019). Spatial diffusion of the 2015–2016 Zika, dengue and chikungunya epidemics in Rio de Janeiro Municipality, Brazil. Epidemiology and Infection 147, e237, 1–13. https://doi.org/ 10.1017/S0950268819001250.