Navigation Links
H7N9 influenza: History of similar viruses gives cause for concern
Date:7/8/2013

The H7N9 avian flu strain that emerged in China earlier this year has subsided for now, but it would be a mistake to be reassured by this apparent lull in infections. The virus has several highly unusual traits that paint a disquieting picture of a pathogen that may yet lead to a pandemic, according to lead scientists from the National Institute of Allergy and Infectious Diseases. David Morens, Jeffery Taubenberger, and Anthony Fauci, in a paper published in mBio, the online open-access journal of the American Society for Microbiology, describe the history of H7 viruses in animal and human disease and point out that H7 influenza has a tendency to become established in bird, horse, and swine populations and may spillover repeatedly into humans.

"The evidence as a whole is complex and the implications of past outbreaks for predicting the future course of the current H7N9 epizootic [an epidemic among animals] are uncertain," write the authors.

The outbreak of H7N9 earlier this year led China to temporarily close scores of live poultry markets in an effort to limit the spread of the virus. Although this previously unrecognized strain of avian influenza A has now been associated with 132 confirmed human infections and 39 related deaths (as of June 14), the rate at which new cases are recognized has dwindled in recent weeks.

In their minireview, Morens, Taubenberger and Fauci point out that despite this apparent hiatus, viruses like H7N9, which have subtype 7 hemagglutinin, are a cause for heightened concern because of several highly unusual characteristics. First, H7 viruses have repeatedly been involved in numerous explosive poultry outbreaks including incidents in New York, Canada, Mexico, the Netherlands, and Italy, and in almost all of these cases the virus eventually spilled over into humans. Also, H7 viruses have the ability to mutate from a low pathogenicity form to a high pathogenicity form in birds, a scenario that can l
'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Scientists trace evolutionary history of what mammals eat
2. Family history of liver cancer increases risk of developing the disease
3. Earth history and evolution
4. New coelacanth find rewrites history of the ancient fish
5. Biology professor secures grant to save West Virginias primary natural history collection
6. Honoring the fundamental role of microbes in the natural history of our planet
7. New report puts real numbers behind history of oyster reefs
8. IU role in Human Microbiome Project exposes battle history between bacteria, viruses in human body
9. Short stretches of piRNA evaluate cells genetic history
10. Bringing natural history collections out of the dark
11. Geologys Mystery Interval, the Great Deepening, and the largest kill-off in Earth history
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... , October 16, 2014 NXT-ID, Inc. (NASDAQ: ... "Company"), a biometric authentication company focused on the growing ... edge technologies including Wocket™, the Smart Wallet, at the ... FiRe is a leading global conference on the intersection ... by Mark Anderson , founder and publisher of ...
(Date:10/15/2014)... virus is spreading rapidly and to an unexpected extent. ... the past and the virus shows a new disease ... before. For this reason, the German National Academy of ... and Engineering, and the Union of the German Academies ... the Ebola epidemic today. , In the statement the ...
(Date:10/14/2014)... N.C. – Like discriminating thieves, prostate cancer tumors scavenge ... the body. But such avarice may be a fatal ... a way to kill prostate cancer cells by delivering ... selectively destroys the diseased cells brimming with the mineral, ... uses two drugs already commercially available for other uses, ...
Breaking Biology News(10 mins):NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5Prostate cancer's penchant for copper may be a fatal flaw 2
... PennsylvaniaOn Tuesday, August 3rd, as part of the ... a team of scientists will discuss the environmental ... Home to some of the most diverse habitats ... being permanently altered by mountaintop removal and valley ...
... elected ten new Fellows of the Society for 2010. ... one or more of the following: research, teaching, extension, ... Entomology 2010 -- ESA,s Annual Meeting -- which will ... Dr. Gary J. Blomquist received his B.S. degree in ...
... Stellwagen Bank National Marine Sanctuary, such as halibut and ... ago, according to a new NOAA report released today ... National Marine Sanctuaries Conservation Series report, "Stellwagen Bank Marine ... sanctuary that are resilient, but have suffered declines in ...
Cached Biology News:Ecologists to discuss impacts of mountaintop mining at special ESA symposium 2Ecologists to discuss impacts of mountaintop mining at special ESA symposium 3Entomological Society of America names 2010 Fellows 2Entomological Society of America names 2010 Fellows 3Entomological Society of America names 2010 Fellows 4Entomological Society of America names 2010 Fellows 5Entomological Society of America names 2010 Fellows 6Entomological Society of America names 2010 Fellows 7Entomological Society of America names 2010 Fellows 8Entomological Society of America names 2010 Fellows 9Top predators and biodiversity historically pressured in Stellwagen Bank National Marine Sanctuary 2
(Date:10/20/2014)... , Oct. 20, 2014 Asterias ... the Company has signed a Notice of Grant ... Medicine (CIRM), effective October 1, 2014.  The NGA ... payments and the release of additional grant funds ... grant award for clinical development of Asterias, product, ...
(Date:10/20/2014)... 2014  GenVec, Inc. (NASDAQ: GNVC ) today ... from its board of directors effective on October 24, 2014.  ... served as its chairman from June 2006 to November 2013.  ... Corporate Governance and Audit Committees of the board.  ... of dedicated service to GenVec, and its stockholders," said ...
(Date:10/20/2014)... Earle Martin , Chief ... that Ellen Teplitzky, an experienced attorney specializing in ... industry, has joined the firm as Director of ... practice. NDA Partners provides legal services, including ... to top law firms and their clients in ...
(Date:10/19/2014)... OCTOBER 20-22, 2014: The 9th ... will take place at the Congress Center ... is now available at http://www.abim.ch . ... organizations from all over the globe will ... latest products and developments on the world ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Zola P. Horovitz To Retire From GenVec Board 2NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2
... Discovery and Validation of New Biomarker Panels , ... Medicine, Incorporated (RBM), the world,s leading multiplexed biomarker ... most comprehensive collection of quantitative immunoassays for use ... and diagnostic development. The new service, DiscoveryMAP(TM) v ...
... ... NC and will include additional stability storage space, additional retain sample storage, and a ... ... worldwide provider of long-term and short term storage of stability samples, sample management, and ...
... Oclaro, Inc. (Nasdaq: OCLR ) has ... biomedical and analytical instrumentation markets. Oclaro filters are used ... and analytical applications, including clinical diagnostics, drug discovery, gene ... from the Oclaro filter portfolio are on display at ...
Cached Biology Technology:Rules-Based Medicine, Inc. Launches DiscoveryMAP(TM) Service for Drug and Diagnostic Development 2Rules-Based Medicine, Inc. Launches DiscoveryMAP(TM) Service for Drug and Diagnostic Development 3Precision Stability Storage Announces Upcoming Expansion 2Precision Stability Storage Announces Upcoming Expansion 3Oclaro(TM) Hits Milestone With Clarity(TM) Fluorescence Filters 2Oclaro(TM) Hits Milestone With Clarity(TM) Fluorescence Filters 3