2026-09-22T19:23:29.073190600Zhttps://opus.uleth.ca/server/oai/requestoai:opus.uleth.ca:10133/1372018-11-02T18:00:19Zcom_10133_3346com_10133_1com_10133_296col_10133_3347col_10133_298
ULethbridge OPUS Repository
supervisor
Byrne, James M.
supervisor
Gannon, Victor P. J.
author
Mori, Julie Y.
author
University of Lethbridge. Faculty of Arts and Science
2007-04-25T16:21:58Z
2007-04-25T16:21:58Z
2001
https://hdl.handle.net/10133/137
E. coli 0157:H7 were isolated from 0.86% (n=1520) water samples and Salmonella species from 6.04% (n=1456) samples collected within the Oldman River watershed in southern Alberta. Peak prevalence of E. coli0157:H7 in July 2000 was 6.3% (n=48). Peak prevalence of Salmonella was 16.2% (n=11) in August 1999 and 33.% (n=42) in July 2000. Prevalence was greater in water from some sampling locations than from others. In non-filtered surface water E. coli0157:H7 and S. typhimurium numbers decreased significantly faster at 20 degrees celsius than at 10 degrees celsius (P=0.000); however this difference did not exist when the same water was filtered (P=0.439). Pathogen survival in one water sample was greater when it was filtered (0.2um pore) than when it was not filtered even though there were no autochthonous bacteria in the water prior to filtration.
en_US
Escherichia coli 0157:H7
Salmonella
Water -- Pollution -- Alberta
Dissertations, Academic
Prevalence and survival of Escherichia coli 0157:H7 and Salmonella spp. in surface waters of Southern Alberta
Thesis
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URL
http://localhost:4000/bitstreams/bae70776-c3c8-413e-a233-f7df5d3dcbae/download
File
MD5
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4686593
application/pdf
MQ68342.pdf
URL
http://localhost:4000/bitstreams/7f184b7e-5870-44b0-b43b-fb545ec2ea49/download
File
MD5
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text/plain
MQ68342.pdf.txt