PubMed Health⌕ Search

Biomedical subjects

H O Adesina

Publications and source records attributed to H O Adesina.

3 recordsLinked to original sources
PubMed1984

The diffusion of cholera outside Ibadan City, Nigeria, 1971.

This paper examined the spread of cholera epidemic to the towns of the former Western State of Nigeria and to the neighbouring villages of Ibadan after the initial introduction of the disease to Ibadan city by early January, 1971). In the diffusion process, an hierarchical diffusion was discovered at the town-village dichotomy while a distance decay function was justified at the purely urban level analyses. In the spread of cholera to all the surrounding villages of Ibadan, the epidemic speed was discovered to be too rapid that neither population size nor distance from Ibadan was relevant to the pattern of spread. The rate of cholera infection was observed to decline with distance from the city of Ibadan, while the duration of the epidemic obeyed the rank-size principles.

Cholera↗
PubMed1984

Identification of the cholera diffusion process in Ibadan, 1971.

The paper tries to examine and identify which spatial diffusion process was responsible for generating the pattern of cholera diffusion (an epidemic spread which was apparently wave-like) within Ibadan City in 1971. In this paper one of Moran's statistics, the BW join-count measure of spatial autocorrelation is employed. Five different plannar graphs are used in the study. The results show that contagion was apparent on the various models of spatial processes employed and on their different combinations. But it is the radial contact diffusion which was discovered to be most important in the spread of the epidemic. But even, though such a radial contact diffusion process was discovered to be the most important, during the advance and peak phases of the epidemic wave; as the epidemic intensity rose to a spread phase, a mixture of the various models became a best contributor to the contagion.

Cholera↗