Daily shedding dynamics of E. coli O157 in an Australian grass-fed beef herd

G. A.C. Lammers, D. Jordan, C. S. McCONNEL, J. Heller

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2948-2955
Number of pages8
JournalEpidemiology and Infection
Volume144
Issue number14
DOIs
Publication statusPublished - 01 Oct 2016

Fingerprint

Escherichia coli O157
Poaceae
Escherichia coli Infections
Volatilization
Feces
Epidemiology
Odds Ratio
Red Meat

Cite this

@article{22897848e846421288d41765292baee2,
title = "Daily shedding dynamics of E. coli O157 in an Australian grass-fed beef herd",
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.",
keywords = "Escherichia coli, daily shedding, veterinary epidemiology, zoonotic foodborne diseases",
author = "Lammers, {G. A.C.} and D. Jordan and McCONNEL, {C. S.} and J. Heller",
note = "Imported on 16 May 2017 - DigiTool details were: publisher = Cambridge University Press, 2016. Volume no. (773r) = 144; Issue no. (773s) = 14; Parent title (773t) = Epidemiology and Infection. ISSNs: 0950-2688;",
year = "2016",
month = "10",
day = "1",
doi = "10.1017/S0950268816001588",
language = "English",
volume = "144",
pages = "2948--2955",
journal = "Journal of Hygiene",
issn = "0950-2688",
publisher = "Cambridge University Press",
number = "14",

}

Daily shedding dynamics of E. coli O157 in an Australian grass-fed beef herd. / Lammers, G. A.C.; Jordan, D.; McCONNEL, C. S.; Heller, J.

In: Epidemiology and Infection, Vol. 144, No. 14, 01.10.2016, p. 2948-2955.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Daily shedding dynamics of E. coli O157 in an Australian grass-fed beef herd

AU - Lammers, G. A.C.

AU - Jordan, D.

AU - McCONNEL, C. S.

AU - Heller, J.

N1 - Imported on 16 May 2017 - DigiTool details were: publisher = Cambridge University Press, 2016. Volume no. (773r) = 144; Issue no. (773s) = 14; Parent title (773t) = Epidemiology and Infection. ISSNs: 0950-2688;

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

KW - Escherichia coli

KW - daily shedding

KW - veterinary epidemiology

KW - zoonotic foodborne diseases

U2 - 10.1017/S0950268816001588

DO - 10.1017/S0950268816001588

M3 - Article

C2 - 27453330

VL - 144

SP - 2948

EP - 2955

JO - Journal of Hygiene

JF - Journal of Hygiene

SN - 0950-2688

IS - 14

ER -