Stefano Morabito (EU Reference Laboratory for E. coli, Rome) presents a new publication on Pathogenic Escherichia coli
Pathogenic Escherichia coli: Molecular and Cellular Microbiology
Publisher: Caister Academic Press
The most important recent findings of the studies on pathogenic E. coli providing a timely overview of the field. Topics covered include: epidemiology of the disease in humans and animals and the biological mechanisms that shaped the pathogenic types of E. coli; shiga toxins; subtilase cytotoxin; cell cycle modulating toxins; the heat stable and heat labile enterotoxins; haemolysins; structural, molecular and functional characteristics of A/E lesions; colonization factor antigens of ETEC;...
This episode further confirms the importance of vegetables as vehicles of VTEC infection. Moreover, the role of domestic and wild animals in the contamination of the crop underlines the importance of applying Good Agriculture Practices (GAP) and Good Hygiene Practices (GHP), in particular biosecurity, to the production processes of vegetables intended to be consumed raw. This applies to the open field production of either vegetables or seeds to be used for sprouting, as stated in the new EU regulations on the safety of sprouts, and also involves the microbiologic quality of the water used in the production process, usually deriving from water streams close to the field.
E. COLI EHEC - UK (03): WATERCRESS, O157, 2013, RESTOCKING...
The ProMED announcement of 15 Nov 2013 is about an outbreak of infections with VTEC O121 occurred in the United States and linked to a brand of frozen food products.
According to CDC and FDA (http://www.fda.gov/Food/RecallsOutbreaksEmergencies/Outbreaks/ucm345768.htm), a total of 35 cases were reported from 19 states, 31 % were hospitalized and 2 developed HUS. The outbreak was recognized by comparing the PFGE "fingerprints" of the strains produced by PulseNet, the national subtyping network. Interviews of the patients and traceback investigations indicated the consumption of frozen food products of a given brand as the source of the outbreak. The outbreak O121 strain was identified in two different frozen products (mini chicken quesadillas, mini pizza slices) of the brand...
Publication by EFSA of the Scientific Opinion on the evaluation of molecular typing methods for major food-borne microbiological hazards and their use for attribution modelling, outbreak investigation and scanning surveillance: Part 1 (evaluation of methods and applications).
The Opinion is available in the EFSA website.
The following ProMED announcements is about 2 VTEC outbreaks linked with swimming in lakes and occurred between June and July in the US.
In one of the episodes the serotype of the EHEC strain is not reported, but it is likely that it was O157 as well.
These episodes underline the importance of waterborne outbreaks associated with recreational water. Contamination my occur from human wastes, but free ranging ruminants might contaminate even lakes that appear to be "incontaminated" natural environments.
Oggetto: PRO/AH/EDR> E. coli EHEC - USA (19): (MN) O157, waterborne
Data: 21 luglio 2013 18.22.18 GMT+02.00
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