We investigated the relation between the spread, time scale, and spatial arrangement of dengue in Bahia, a Brazilian dry climate region, for the period 2000 to 2009. The degree of cross-correlation is calculated for 15 economic regions. We propose a multiscale statistical analysis to datasets of dengue cases in order to verify the efect of infection dispersal on the economic regions from the metropolitan region of Salvador. Our empirical results support a signifcant and persistent cross-correlation between most regions, reinforcing the idea that economic regions or climatic conditions are non-statistically signifcant in the spread of dengue in the State of Bahia. Our main contribution lies in the cross-correlation results revealing multiple aspects related to the propagation of dengue in dry climate regions.
AUTHORS:
Aloísio S. Nascimento Filho, Thiago B. Murari, Paulo Ferreira, Hugo Saba, Marcelo A. Moret
