Abstract:
:This study aimed to describe the diurnal shedding dynamics of Escherichia coli O157 in cattle managed on pasture. The purpose was to identify the value of a single measurement for predicting the shedding status on subsequent days. Over a 14-day period, 24 beef cows with known E. coli O157 shedding status were sampled twice daily or daily (21 sampling points) and E. coli O157 was enumerated from faeces. No association between shedding status of individual animals within a 7-h period was identified (odds ratio 1·5, P = 0·08). Short-interval sampling demonstrated substantial diurnal volatility in shedding of E. coli O157 that is not evident in studies based on long-interval (>7 days) sampling. The findings contribute to and support previous findings on the question why it has been difficult to achieve progress in understanding the epidemiology of E. coli O157 infection in cattle.
journal_name
Epidemiol Infectjournal_title
Epidemiology and infectionauthors
Lammers GA,Jordan D,McCONNEL CS,Heller Jdoi
10.1017/S0950268816001588subject
Has Abstractpub_date
2016-10-01 00:00:00pages
2948-2955issue
14eissn
0950-2688issn
1469-4409pii
S0950268816001588journal_volume
144pub_type
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