Why romaine lettuce keeps getting recalled for E. coli contamination

The CDC again warns people to throw out romaine before Thanksgiving.
Source: Washington Post: To Your Health - Category: Consumer Health News Authors: Source Type: news

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Publication date: Available online 9 December 2019Source: Enzyme and Microbial TechnologyAuthor(s): Liuyan Gu, Haibo Yuan, Xueqin Lv, Guangsheng Li, Rigang Cong, Jianghua Li, Guocheng Du, Long LiuAbstract5-Methylpyrazine-2-carboxylic acid (MPCA) is an important pharmaceutical intermediate and is used in the production of hypoglycemic agents and lipid-lowering drugs. This work aimed to develop a whole-cell biocatalytic process for the efficient synthesis of MPCA from 2, 5-dimethylpyrazine (DMP). Firstly, a whole-cell biocatalyst Escherichia coli strain was constructed by plasmid-based expression of xylene monooxygenase (XMO...
Source: Enzyme and Microbial Technology - Category: Biotechnology Source Type: research
Publication date: Available online 9 December 2019Source: Colloids and Surfaces A: Physicochemical and Engineering AspectsAuthor(s): Qiang Li, Xiaotai Zhang, Hui Yu, Huifeng Zhang, Jihua WangAbstractA Schiff-base and hydrophilic functionalized polyamide reverse osmosis (RO) membrane has been fabricated by ordinally grafting ethylenediamine, glutaraldehyde, and 3-amino-1-propanol on the freshly fabricated polyamide surface under a facile mild grafting strategy. The modification process has no obvious influence on membrane thickness and morphology. Compared to the pristine polyamide membrane, the modified membrane becomes mo...
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Category: Chemistry Source Type: research
This outbreak is caused by a different strain of E. coli than the other current outbreak linked to romaine lettuce grown in the Salinas, California region, which has over 100 reported cases of infection.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news
The CDC says eight people have contracted E. coli in three states from a pre-packaged salad kit while the FDA announced a recall of a pre-cut fruit salad mix that sickened 33 with salmonella.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
Enterotoxigenic Escherichia coli (ETEC) that expresses F4ac fimbriae is the major pathogenic microorganism responsible for bacterial diarrhea in neonatal piglets. The susceptibility of piglets to ETEC F4ac is determined by a specific receptor on the small intestinal epithelium surface. We performed an iTRAQ-labeled quantitative proteome analysis using a case-control design in which susceptible and resistant full-sib piglets were compared for the protein expression levels. Two thousand two hundred forty-nine proteins were identified, of which 245 were differentially expressed (fold change> 1.5, FDR-adjusted P
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Studies focused on development of an attenuated vaccine against Mycobacterium avium subsp. paratuberculosis (Map), the causative agent of paratuberculosis (Ptb) in cattle and other species, revealed that deletion of relA, a global gene regulator, abrogates the ability of Map to establish a persistent infection. In the absence of relA, cattle develop CD8 cytotoxic T cells (CTL) with the ability to kill intracellular bacteria. Analysis of the recall response to a relA mutant, Map/ΔrelA, with cells from a vaccinated steer demonstrated that a 35-kDa membrane peptide (MMP) is one of the targets of the response. This obser...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Publication date: Available online 9 December 2019Source: Journal of ColoproctologyAuthor(s): Seyedeh Elham Norollahi, Seyed Mohammad Taghi Hamidian, Zeynab Khazaee Kohpar, Rezvan Azadi, Pooya Rostami, Sogand Vahidi, Sahar Ghazanfari, Farnaz Azar Shabe, Roya Khaksar, Ali Akbar SamadaniAbstractColorectal cancer is one of the most important malignancies in the classification of gastrointestinal cancers. One of the predisposing factors at molecular level for this cancer is via WNT signaling which is associated with the vast numbers of different genes. Thus, in this study, we aimed to investigate whether Adenomatous Polyposis ...
Source: Journal of Coloproctology - Category: Gastroenterology Source Type: research
As part of the ongoing investigation into the multistate outbreak of Escherichia coli O157:H7 ( E. coli O157) infections, Wisconsin health and food safety officials have found E. coli O157:H7 bacteria in an unopened bag of pre-washed chopped romaine collected from an ill person ’s home. Additional laboratory testing is pending to determine if the E. coli O157 found in the pre-washed chopped romaine matches the strain causing the multi-state outbreak linked to romaine lettuce. The E. coli O157...(see release)
Source: Wisconsin DHFS Press Releases - Category: Hospital Management Authors: Source Type: news
We reported a general increase of unnecessary urine cultures in both community and hospital patients. The most representative microorganism isolated from Community (58.2%) and Hospital (47.6%) was E. coli. UTIs causative bacteria in hospitalized patients was more than twice as resistant to Trimetoprim/sulphamethoxazole (OR 2.26) and Imipenem (OR 2.56), for Gram-positive and Gram-negative, respectively, than in Community patients. Nitrofurantoin was the only agent without differences in resistance rate between community and hospital UTIs. Therefore, physicians could use it as a definitive therapy for uncomplicated cystitis ...
Source: New Microbiologica - Category: Microbiology Tags: New Microbiol Source Type: research
Authors: Rovida F, Nepita EV, Giardina F, Piralla A, Campanini G, Baldanti F Abstract About 15,000 hospitalizations due to group A Rotavirus gastroenteritis (RVA) are recorded each year in Italy. In the present study, we report the seasonal distribution and molecular characterization of RVA in pediatric and adult hospitalized patients in the period September 2015-April 2018 in Pavia province, Lombardy Region. During the study period, stool samples of 1450 patients with acute gastroenteritis were analyzed and 122 were RVA positive, the majority belonging to pediatric patients (94.0%) while only a minority of patient...
Source: New Microbiologica - Category: Microbiology Tags: New Microbiol Source Type: research
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