Ogden Iain D, MacRae Marion, Strachan Norval J C
Applied Food Microbiology Group, Department of Medical Microbiology, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK.
FEMS Microbiol Lett. 2004 Apr 15;233(2):297-300. doi: 10.1016/j.femsle.2004.02.021.
The prevalence of Escherichia coli O157 in Scottish beef cattle at abattoir was found to be greater during the cooler months [11.2% (95% CI, 8.4-13.9%)] compared to the warmer months [7.5% (95% CI, 5.4-9.6%)]; the reverse of seasonality of human infections. However, high shedding beef cattle (excreting 10(-4) g(-1)) appear to shed greater concentrations of E. coli O157 in the warmer months which may partly explain increased human infection seasonality at this time.
研究发现，与温暖月份[7.5%（95%置信区间，5.4 - 9.6%）]相比，屠宰场中苏格兰肉牛的大肠杆菌O157流行率在较凉爽月份更高[11.2%（95%置信区间，8.4 - 13.9%）]；这与人类感染的季节性相反。然而，高排泄量的肉牛（排泄量为10⁻⁴克⁻¹）在温暖月份似乎排出更高浓度的大肠杆菌O157，这可能部分解释了此时人类感染季节性增加的原因。
