Navigation Links
New test can precisely pinpoint food pathogens
Date:10/25/2011

ITHACA, N.Y. -- With salmonella-tainted ground turkey sickening more than 100 people and listeria-contaminated cantaloupes killing 15 this year, the ability to detect outbreaks of food-borne illness and determine their sources has become a top public health priority.

A new approach, reported online Oct. 14 in the journal Applied and Environmental Microbiology by a collaborative team led by Cornell University scientists, will enable government agencies and food companies to pinpoint the exact nature and origin of food-borne bacteria with unprecedented accuracy, says food science professor Martin Wiedmann.

The standard method of tracing food-borne illness involves breaking up the DNA of bacteria samples into smaller pieces and analyzing their banding patterns.

But scientists often find that different strains of bacteria have common DNA fingerprints that are too genetically similar to be able to differentiate between them, making it difficult to establish whether the salmonella that made one person sick was the same salmonella that infected another person. This was the case in a salmonella outbreak linked to salami made with contaminated black and red pepper that included 272 cases in 44 states between July 2009 and April 2010.

To surmount this challenge, Wiedmann adopted a genomic approach.

By sequencing the genome of 47 samples of the bacteria -- 20 that had been collected from human sources during the outbreak, and 27 control samples collected from human, food, animal and environmental sources before the outbreak -- Wiedmann and his team were able to rapidly discriminate between outbreak-related cases and non-outbreak related cases, isolating four samples believed to be connected to the pepper contamination.

In the process of doing so, he also found other links: A Salmonella strain that led to a nationwide recall of pistachio nuts in 2009 turned up in samples from four people -- only one of whom had reported eating pistachios.'/>"/>

Contact: Joe Schwartz
Joe.Schwartz@cornell.edu
607-254-6235
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers discover precisely how thalidomide causes birth defects
2. Nano-tetherball biosensor precisely detects glucose
3. Scripps Research scientists pinpoint shape-shifting mechanism critical to protein signaling
4. Scripps Research scientists help pinpoint cause of stress-related DNA damage
5. Yale researchers pinpoint reasons for dramatic rise in cesarean births
6. Scientists use super microscope to pinpoint body’s immunity switch
7. New study pinpoints why some microbial genes are more promiscuous than others
8. Pinpointing air pollutions effects on the heart
9. New technology pinpoints genetic differences between cancer and non-cancer patients
10. UNC scientists pinpoint link between light signal and circadian rhythms
11. Satellites pinpoint drivers of urban heat islands in the northeast
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... , Aug. 20, 2014 /CNW/ -  Issue ... and can quickly become life threatening for some children.    ... as 1.2 million Canadians have food allergies and this number ... cent of children are estimated to have food allergies.  ... mild skin irritations and hives to breathing difficulties and loss ...
(Date:8/20/2014)... visible in in this image of the Para and ... were most likely intentionally set in order to deforest ... or stand of trees where the land is thereafter ... conversion of forestland to farms, ranches, or urban use. ... of the Amazon Rainforest in the middle of the ...
(Date:8/20/2014)... Calif., August 19, 2014 -- Bay Area Lyme Foundation, ... and simple to cure, applauds new research published in ... Ticks and Tick-borne Diseases . The findings ... California are active throughout the year, making the threat ... researchers at California Department of Public Health (CDPH) Vector-borne ...
Breaking Biology News(10 mins):Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3Lyme disease risk is year-round in Northwest California, according to new study 2Lyme disease risk is year-round in Northwest California, according to new study 3
... the Olympic Peninsula joined in an exceptional partnership with ... Washington to develop a set of science-based options that ... sustainability in the face of a changing climate. ... roads, fish, and wildlife on the peninsulaare published in ...
... of their offspring so they inherit either their mother,s ... more offspring are more likely to have daughters. ... successful, produce more sons. The study, by scientists ... Kyushu University (Japan), is published today (9 January) in ...
... University of Utah biology Professor Nalini Nadkarni is being ... the American Association for the Advancement of Science (AAAS) ... Award. The AAAS has issued the news release below: ... (AAAS) has named Nalini M. Nadkarni as the recipient ...
Cached Biology News:Partnership yields options for adapting to climate change on the Olympic Peninsula 2Fit females make more daughters, mighty males get grandsons 2Utah biologist wins 2011 AAAS Public Engagement with Science Award 2Utah biologist wins 2011 AAAS Public Engagement with Science Award 3
(Date:8/20/2014)... , Aug. 20, 2014 /PRNewswire-iReach/ -- A case ... collaboration between the school,s bioengineering department and the ... the Intel® Software Academic Program, UCSD,s research focuses ... the human body.  Photo - ... exhibits the work of Dr. Todd P. ...
(Date:8/19/2014)... 2014 Shimadzu Scientific Instruments has ... and Nexera-i, adding to the company’s extensive line-up ... an intuitive operating environment, and full automation, the ... workflow for conventional to ultra-high-speed analysis. ... intelligent design so users can begin building the ...
(Date:8/19/2014)... (PRWEB) August 19, 2014 Robin Williams’ ... disease can take on an individual. Symptoms range ... facial expression, problems swallowing and severe depression. Parkinson’s ... dying off of dopamine producing neurons of the brain. ... a disease that slowly and progressively gets worse, they ...
(Date:8/19/2014)... , Aug. 19, 2014   Synthetic ... company developing novel anti-infective biologic and drug programs ... diseases, announced today that its novel C. ... the 54 th Interscience Conference on Antimicrobial ... Washington D.C. Synthetic ...
Breaking Biology Technology:Intel and University of San Diego Bioengineering Department Release Case Study on Health Sciences Research 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 3As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 2As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 4
... , Trial conducted pursuant to Special ... QUEBEC CITY, Dec. 16 /PRNewswire-FirstCall/ - AEterna Zentaris Inc. ... global biopharmaceutical company focused on oncology and endocrine therapy, ... Inc. ("Keryx") ( KERX), of a Phase 3 registration ...
... , , , ... for Nanosphere, Inc.,s Verigene(R) and Verigene(R) SP systems for,infringement of ... the,identification and/or the quantification of a target compound". The import,ban ... any country of,the European Union. Customs authorities are required to ...
... ... will hold its 23rd Annual Technical Conference & Exhibition on March 22-25, 2010 at the ... out to even more experts in the field we are proud to announce that the ... , , ...
Cached Biology Technology:AEterna Zentaris Partner, Keryx, Initiates Phase 3 Registration Trial with Perifosine (KRX-0401) for the Treatment of Patients with Advanced Multiple Myeloma 2AEterna Zentaris Partner, Keryx, Initiates Phase 3 Registration Trial with Perifosine (KRX-0401) for the Treatment of Patients with Advanced Multiple Myeloma 3AEterna Zentaris Partner, Keryx, Initiates Phase 3 Registration Trial with Perifosine (KRX-0401) for the Treatment of Patients with Advanced Multiple Myeloma 4AEterna Zentaris Partner, Keryx, Initiates Phase 3 Registration Trial with Perifosine (KRX-0401) for the Treatment of Patients with Advanced Multiple Myeloma 5Eppendorf Successfully Initiates Import ban Against Nanosphere, Inc. for the Countries of the European Union 2American Filtration and Separations Society to Hold 23nd Annual Technical Conference 2American Filtration and Separations Society to Hold 23nd Annual Technical Conference 3American Filtration and Separations Society to Hold 23nd Annual Technical Conference 4
MOUSE ANTI POLY (ADP-RIBOSE) Immunogen: Purified poly (ADP-ribose) polymer, 10-50 unit chain length...
... by N.C. Price (1996) • ... on protein chemistry and the ... proteins. Data on the following ... size determination, amino acid analysis ...
Edited by D.M. Gersten (1996) Provides comprehensive descriptions of the techniques available for analytical gel electrophoresis of proteins and offers clear step-by-step protocols for all of the m...
...
Biology Products: