Navigation Links
New tools used to control foodborne hepatitis A outbreaks related to green onions

Novel use of genetic testing methods helped public health officials control and limit the further spread of four outbreaks of foodborne hepatitis A virus in 2003 related to the consumption of green onions, according to a detailed analysis published in the October 15 issue of The Journal of Infectious Diseases, now available online.

The authors of the study, Joseph J. Amon, PhD, MSPH, and colleagues at the Centers for Disease Control and Prevention (CDC), explained that these molecular epidemiologic methods had not previously been used in an ongoing investigation of a hepatitis A virus outbreak. The methods, involving genetic sequencing analysis of virus found in blood samples from infected individuals, have greatly improved understanding of outbreaks of other foodborne pathogens, but are time-consuming and not widely available.

In September 2003, Tennessee, North Carolina, and Georgia reported a total of 422 cases of foodborne hepatitis A virus infection to CDC. Preliminary investigations suggested clustering of reported cases among patrons of three unrelated restaurants. Investigators identified green onions as the likely culprit in the outbreak by interviewing infected and uninfected restaurant patrons. In addition to these standard techniques, the researchers also compared viral RNA sequences from case patients and individuals concurrently ill with hepatitis A virus infection in non-outbreak settings in the United States and Mexico.

Viral RNA sequences from patients in the three states, plus patients involved in a subsequent outbreak in Pennsylvania in October 2003 (the latter recently described in the Sept. 1 issue of the New England Journal of Medicine), were slightly different from each other. The viral sequence from each outbreak, however, was identical to one or more sequences isolated from northern Mexican residents infected with hepatitis A virus. The researchers concluded that the sources of the green onions served in restaurants
'"/>

Source:Infectious Diseases Society of America


Page: 1 2

Related biology news :

1. Improved statistical tools reveal many linked loci
2. Virginia Tech group adds tools to DNA-targeted anti-cancer drugs
3. MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools
4. Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer
5. New RNAi tools enable systematic studies of gene function
6. Discovery of new molecular tools for biosynthesis could lead to advances in use of pectin
7. Recycled paper and compost could both be key tools to control plant disease
8. Nanotech tools yield DNA transcription breakthrough
9. Molecular tools make the cut
10. Chimpanzees found to use tools to hunt mammalian prey
11. Ancient olfaction protein is shared by many bugs, offering new pest control target
Post Your Comments:
(Date:8/28/2014)... the University of Minnesota have developed an animal research ... for muscle regeneration research as well as studies of ... research is published in the current edition of the ... treatment for FSHD, which is thought by many to ... is an unusual genetic disorder because, unlike most genetic ...
(Date:8/28/2014)... Athens, Ga. The support of peer groups ... effective breastfeeding programs, according to recent University of ... mothers in the Athens-Clarke County area determined that ... the outcomes of mothers of infants. , "Mothers ... be successful at breastfeeding," said study co-author Alex ...
(Date:8/28/2014)... Advocate and Senior Staff Attorney at the Electronic Frontier ... of biometric and mobile commerce experts set to speak ... Tampa, Florida on September 15, ... Rahman, Director, Technology and Strategy at Samsung, and Philippe de ... this year,s event is Mobility at the Crossroads of ...
Breaking Biology News(10 mins):UMN researchers find animal model for understudied type of muscular dystrophy 2Breastfeeding study shows need for effective peer counseling programs 2Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2
... Ore. -- (May 9, 2011) -- High in the sky, ... airborne pollutants such as sulfur dioxide into reactive aqueous particulates. ... emerging research from the University of Oregon provides evidence that ... a pollutant of volcanic gasses and many combustion processes -- ...
... A collaboration between BBSRC, EPSRC and industry has today ... ways of extracting valuable chemicals from the co-products of ... biofuels produces low-value derivatives that are often sold as ... to find ways of processing these by-products to yield ...
... has shown promising results for treating coeliac disease in a ... Phase II trials within the next year. The Phase ... and bioactivity of the vaccine Nexvax2, which has been developed ... by an immune reaction to the gluten protein found in ...
Cached Biology News:Researchers get new view of how water and sulfur dioxide mix 2Public and private sectors unite to make more of brewing by-products 2Celiac disease vaccine shows promising results in Phase I trial 2
(Date:8/28/2014)... 2014 Whitehouse Laboratories is excited to ... with PTI Inspection Systems that will enable ... the art leak testing method development and validation programs ... available. As part of this agreement, Whitehouse Labs has ... Detection Instrument developed and manufactured by PTI. The ...
(Date:8/27/2014)... Austin, TX (PRWEB) August 27, 2014 ... $6 million in Series B funding and secured Otter ... and investment capital will accelerate commercialization of GGI’s Agriplier™ ... multiple crop types. , “Since our first meeting, ... commitment to the biological product space,” said Alan Sobba, ...
(Date:8/27/2014)... In 2013, Lawrence Livermore National ... Security LLC (LLNS), was awarded more than ... laser system for the European Union's Extreme Light ... the Czech Republic. , When commissioned to its ... " High repetition-rate Advanced Petawatt Laser System " ...
(Date:8/27/2014)... , Aug. 27, 2014   MSC , ... patient safety, today announced the appointment of Mary ... With 28 years of experience preparing companies for ... 2013 as Executive Vice President of Corporate Development and ... performance improvement business , as well as corporate strategy ...
Breaking Biology Technology:Whitehouse Labs Renews Partnership with PTI Inspection Systems 2Whitehouse Labs Renews Partnership with PTI Inspection Systems 3Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3LLNL Synchs up with ELI Beamlines on Timing System 2LLNL Synchs up with ELI Beamlines on Timing System 3MSC names Mary Beth Loesch President and CEO 2
... Ontario and WAKE FOREST, N.C., Feb. 23, 2012 ... ( www.tersusenv.com ) announced today the signing of ... Under the terms of the agreement, Tersus Environmental ... – KB-1® and KB-1® Plus – as well ...
... PRA, a leading Clinical Research Organization, continues our expansion ... of an office in Singapore. The office will serve ... strengthening the quality and timeliness of our deliverables to ... the heart of the city-state, will provide monitoring, project ...
... PARK, Calif., Feb. 23, 2012 Telome Health, Inc.™, ... telomere biology in human health, has announced that co-founder and ... Year by Silicon Valley Business Journal. ... award, especially coming from the heart of innovation, Silicon Valley, ...
Cached Biology Technology:PRA Opens Office in Singapore 2Telome Health Co-founder and Nobel Laureate Elizabeth Blackburn Awarded Innovator of the Year 2
... The H2OBIT is a fully licensed, high throughput, ... processing of up to 24 microplates. This equates ... plates. ,A robotic arm rapidly transfers a ... in temperature ramping times that are considerably faster ...
... Dideoxycytidine Dideoxycytidine is a cytidine analog that ... retroviral activity. Immunogen: Chemical / ... The specificity of the ddC antiserum was ... of ddC to moles of ddC analog at ...
... series of Class II Biological Safety ... certification to the world's highest safety ... the cabinets cannot be adjusted out ... low noise and arm rest ensure ...
... HM-4000 Multidizer is designed with a variety ... rotating - all in one unit. Shake, ... independently operating compartments allow for hybridization and ... motion , The upper chamber uses ...
Biology Products: