Prevalence of
            <i>Escherichia coli</i>
            O157:H7 in Organically and Naturally Raised Beef Cattle

Reinstein, Shelby L.; Fox, J. T.; Shi, Xiaorong; Alam, Mohammad Jahangir; Renter, David G.; Nagaraja, T. G.

doi:10.1128/aem.00459-09

Cited by 29 publications

(16 citation statements)

References 16 publications

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“…37 However, from the United States, higher prevalence (14.2%) for E. coli O157:H7 in cattle was reported. 38 Also in a study conducted in Iran, stx gene harboring E. coli strains were detected from 5%, out of 125 frozen food samples of animal origin (chicken, fish, mince, slice kebab meat, and beef burger). 39 Although most E. coli O157:H7 infections occur in the summer and autumn, 40 in the present study E. coli O157:H7 was isolated from frozen raw beef samples in the spring.…”

Section: Discussionmentioning

confidence: 99%

Presence of Staphylococcus aureus and Shiga Toxigenic Escherichia coli O157:H7 in Raw Meat in Ağrı, Turkey

Ayaz¹,

Çufaoğlu²,

Örmeci³

et al. 2016

Int J Enteric Pathog

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Section: Discussionmentioning

confidence: 99%

Presence of Staphylococcus aureus and Shiga Toxigenic Escherichia coli O157:H7 in Raw Meat in Ağrı, Turkey

Ayaz¹,

Çufaoğlu²,

Örmeci³

et al. 2016

Int J Enteric Pathog

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“…Escherichia coli O157 infections represent a significant public health risk, particularly in high‐risk populations such as young children and the elderly (Mead and Griffin, 1998). Ruminants, particularly cattle, represent a major reservoir for the pathogen, and while carriage in cattle is generally transient, reported prevalence ranges between 0.2% and 48.8% (Hussein and Bollinger, 2005; Woerner et al., 2006; Gunn et al., 2007; Reinstein et al., 2009; Pennington, 2010). Carriage of E. coli O157 in cattle is of considerable concern as the bacteria are transmitted by food, water and direct animal contact, with major outbreaks linked to contaminated beef, water contaminated by bovine faecal run‐off and contact with infected calves (Mead and Griffin, 1998; Public Health Agency of Canada 2000; Pennington, 2010).…”

Section: Introductionmentioning

confidence: 99%

A Systematic Review of Vaccinations to Reduce the Shedding of Escherichia coli O157 in the Faeces of Domestic Ruminants

Snedeker

Campbell

Sargeant

2011

Zoonoses and Public Health

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The objective of this study was to conduct a systematic review and meta-analysis of the published literature to evaluate the efficacy of vaccines in reducing faecal shedding of Escherichia coli O157 in ruminants. A systematic search of eight databases and land-grant university research reports using an algorithm adapted from a previous systematic review of pre-harvest interventions against E. coli O157 was conducted to locate all reports of in vivo trials of E. coli O157 vaccines in ruminants published between 1990 and 2010. All located references were screened by two independent reviewers, and data were extracted from all relevant papers, with treatment effect measured in odds ratios. For trials with a faecal prevalence outcome that did not involve mixing of treated and untreated cattle in the same pen, efficacy was explored using random-effects meta-analysis. Funnel plots were used to evaluate publication bias, and random-effects meta-regression was performed to explore heterogeneity. The search located 20 relevant manuscripts which detailed 24 trials and 46 treatment comparisons; all but one trial involved cattle. There were 9 deliberate challenge trials (19 comparisons), and 15 natural exposure trials (27 comparisons). For Type III protein vaccines, there were 9 natural exposure trials detailing 17 comparisons, and meta-analysis of 8 comparisons revealed that vaccine treatment resulted in a statistically significant reduction in E. coli O157 faecal prevalence [odds ratio (OR)=0.38, 95% confidence interval (CI)=0.29, 0.51]. Siderophore receptor and porin protein (SRP) vaccines (three trials/four comparisons) also reduced faecal prevalence (OR=0.42, 95% CI=0.20, 0.61); however, none of the bacterin vaccine trials (n=3, six comparisons) resulted in a statistically significant reduction in prevalence. The results suggest that Type III protein and SRP vaccines significantly reduce faecal shedding in cattle; however, caution should be taken in interpreting the results because of the heterogeneity in the results.

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“…Again, no meat analysis occurred in Pennsylvania due to the postponed harvesting. Due to the greater number of positive fecal samples in Pennsylvania over the course of the study, that site expressed a greater rate than the other two sites (Table 6), but the E. coli prevalence rate was within the range reported by Reinstein et al (2009).…”

Section: Prevalence Of Pathogens In Hide and Meat Samplesmentioning

confidence: 73%

Food safety considerations in integrated organic crop–livestock systems: prevalence of Salmonella spp. and E. coli O157:H7 in organically raised cattle and organic feed

Nazareth

Shaw

Delate

et al. 2019

Renew. Agric. Food Syst.

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Availability of organic foods has been increasing in the United States due to consumer demand for food produced with a lower environmental footprint. Surveys show that organic consumers view organic food as safer and of higher quality, but a number of food-borne outbreaks have been linked to organic produce in recent years. This outcome suggests that improved food safety protocols are needed to ensure food safety along organic food chains. In this study, model integrated crop–livestock organic systems were established in three states (Iowa, Minnesota and Pennsylvania) to evaluate biological performance and food safety aspects. Organically raised cattle and their feed/forage, feces, hide and meat were examined for the presence of two pathogens, Escherichia coli O157:H7 and Salmonella spp. Results confirmed that E. coli O157:H7 was not isolated on any hide or meat samples. Across all sites, the prevalence rate for E. coli O157:H7 on feed/forage and fecal matter was 9.43 and 7.26%, respectively. Salmonella spp. was isolated from 1.89, 3.33 and 18.6% of feed, fecal and hide samples, respectively. Salmonella spp. was not detected on any meat samples. While Salmonella spp. rates on hides were greater than those in feed and fecal samples, the prevalence rate of both pathogens on cattle hides was lower than in previous studies. The use of an organic fly repellent containing essential oils in this study would need to be investigated further to determine any correlation between its use and lower pathogen rates on hides. Feed/forage was more likely to test positive for E. coli O157:H7 from June through August, indicating the importance of strict sanitary measures to prevent feed contamination during summer months. These results suggest that careful adherence to food safety management strategies can help reduce the risk of bacterial contamination in integrated crop–livestock systems.

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Prevalence of Escherichia coli O157:H7 in Organically and Naturally Raised Beef Cattle

Cited by 29 publications

References 16 publications

Presence of Staphylococcus aureus and Shiga Toxigenic Escherichia coli O157:H7 in Raw Meat in Ağrı, Turkey

Presence of Staphylococcus aureus and Shiga Toxigenic Escherichia coli O157:H7 in Raw Meat in Ağrı, Turkey

A Systematic Review of Vaccinations to Reduce the Shedding of Escherichia coli O157 in the Faeces of Domestic Ruminants

Food safety considerations in integrated organic crop–livestock systems: prevalence of Salmonella spp. and E. coli O157:H7 in organically raised cattle and organic feed

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