User profiles for Olaf Berke

Olaf Berke

Professor of Statistical Epidemiology, University of Guelph
Verified email at uoguelph.ca
Cited by 4704

[HTML][HTML] Exploratory disease mapping: kriging the spatial risk function from regional count data

O Berke - International journal of health geographics, 2004 - Springer
Background There is considerable interest in the literature on disease mapping to interpolate
estimates of disease occurrence or risk of disease from a regional database onto a …

Weather, water quality and infectious gastrointestinal illness in two Inuit communities in Nunatsiavut, Canada: potential implications for climate change

SL Harper, VL Edge, CJ Schuster-Wallace, O Berke… - EcoHealth, 2011 - Springer
Climate change is expected to cause changes in precipitation quantity, intensity, frequency
and duration, which will subsequently alter environmental conditions and might increase the …

[HTML][HTML] Increase in seroprevalence of canine leptospirosis and its risk factors, Ontario 1998–2006

GD Alton, O Berke, R Reid-Smith, D Ojkic… - Canadian Journal of …, 2009 - ncbi.nlm.nih.gov
Canine leptospirosis has been described as having re-emerged in North America around the
mid-1990s, with a change in the epidemiology of the infecting serovars responsible for the …

[HTML][HTML] Factors associated with whole carcass condemnation rates in provincially-inspected abattoirs in Ontario 2001-2007: implications for food animal syndromic …

…, DL Pearl, KG Bateman, WB McNab, O Berke - BMC veterinary …, 2010 - Springer
Background Ontario provincial abattoirs have the potential to be important sources of syndromic
surveillance data for emerging diseases of concern to animal health, public health and …

Risk factors for Campylobacter spp. colonization in broiler flocks in Iceland

…, E Gunnarsson, N Stern, O Berke… - Preventive Veterinary …, 2006 - Elsevier
We sampled 1091 Icelandic broiler flocks at slaughter from May 2001 to December 2003 to
determine the prevalence of, and investigate risk factors for the presence of, Campylobacter …

Spatial distributions of male and female strawberry poison frogs and their relation to female reproductive resources

H Pröhl, O Berke - Oecologia, 2001 - Springer
In many species with a resource-based mating system, males defend resources to increase
their attractiveness to females. In the strawberry poison frog, Dendrobates pumilio, suitable …

[HTML][HTML] Heat stress related dairy cow mortality during heat waves and control periods in rural Southern Ontario from 2010–2012

KE Bishop-Williams, O Berke, DL Pearl, K Hand… - BMC veterinary …, 2015 - Springer
Background Heat stress is a physiological response to extreme environmental heat such as
heat waves. Heat stress can result in mortality in dairy cows when extreme heat is both …

[HTML][HTML] Echinococcus multilocularis infection, southern Ontario, Canada

…, CM Jardine, GD Campbell, O Berke… - Emerging infectious …, 2019 - ncbi.nlm.nih.gov
Alveolar echinococcosis, the disease caused by infection with the intermediate stage of the
Echinococcus multilocularis tapeworm, is typically fatal in humans and dogs when left …

Reduction of free-roaming cat population requires high-intensity neutering in spatial contiguity to mitigate compensatory effects

…, L Azriel, D Gibor, O Berke… - Proceedings of the …, 2022 - National Acad Sciences
When free-roaming in natural areas, the domestic cat (Felis silvestris catus) is ranked high
among the most destructive alien species. Near human dwellings, it might pose a risk to …

[HTML][HTML] Comparison of risk factors for seropositivity to feline immunodeficiency virus and feline leukemia virus among cats: a case-case study

BK Chhetri, O Berke, DL Pearl, D Bienzle - BMC veterinary research, 2015 - Springer
Background Feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) are reported
to have similar risk factors and similar recommendations apply to manage infected cats. …