Temporal and geographical distributions of reported cases of Escherichia coli O157 : H7 infection in ontario.
The distribution of 3001 cases of verocytotoxigenic Escherichia coli (VTEC) reported in the Province of Ontario, Canada, were examined to describe the magnitude of this condition geographically and to evaluate the spatial relationship between livestock density and human VTEC incidence using a Geographical Information System.
Incidence of VTEC cases had a marked seasonal pattern with peaks in July.
Areas with a relatively high incidence of VTEC cases were situated predominantly in areas of mixed agriculture.
Spatial models indicated that cattle density had a positive and significant association with VTEC incidence of reported cases (P=0.000).
An elevated risk of VTEC infection in a rural population could be associated with living in areas with high cattle density.
Results of this study suggested that the importance of contact with cattle and the consumption of contaminated well water or locally produced food products may have been previously underestimated as risk factors for this condition.
Mots-clés Pascal : Escherichia coli, Enterobacteriaceae, Bactérie, Bactériose, Infection, Epidémiologie, Etude cas, Prévalence, Variation géographique, Variation saisonnière, Facteur risque, Surveillance sanitaire, Diarrhée, Hémolyse urémie, Appareil digestif pathologie, Intestin pathologie, Appareil urinaire pathologie, Hémopathie, Anémie hémolytique, Rein pathologie, Insuffisance rénale, Homme, Ontario, Canada, Amérique du Nord, Amérique, Toxine, Toxine type Shiga
Mots-clés Pascal anglais : Escherichia coli, Enterobacteriaceae, Bacteria, Bacteriosis, Infection, Epidemiology, Case study, Prevalence, Geographical variation, Seasonal variation, Risk factor, Sanitary surveillance, Diarrhea, Hemolytic uremic syndrome, Digestive diseases, Intestinal disease, Urinary system disease, Hemopathy, Hemolytic anemia, Kidney disease, Renal failure, Human, Ontario, Canada, North America, America, Toxin, Shiga-like toxin
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0308570
Code Inist : 002A05B11. Création : 16/11/1999.