Navigation Links
NIH-funded scientists describe genesis, evolution of H7N9 influenza virus
Date:8/21/2013

WHAT:

An international team of influenza researchers in China, the United Kingdom and the United States has used genetic sequencing to trace the source and evolution of the avian H7N9 influenza virus that emerged in humans in China earlier this year. The study, published today in Nature, was supported by the National Institute of Allergy and Infectious Diseases (NIAID), a component of the National Institutes of Health, and other organizations.

Working in three Chinese provinces, researchers led by Yi Guan, Ph.D., of the University of Hong Kong collected samples from the throats and digestive tracts of chickens, ducks, geese, pigeons and quail. Fecal and water samples from live poultry markets and the natural environment were also collected. From these samples, the researchers isolated several influenza viruses and genetically sequenced those of the H7N9 subtype as well as related H7N7 and H9N2 viruses. These sequences were compared with archived sequences of the same subtypes isolated in southern China between 2000 and 2013. The researchers compared the differences between the two sets of sequences to reconstruct how the H7N9 virus evolved through various species of birds and to determine the origin of genes.

According to their analysis, domestic ducks and chickens played distinct roles in the genesis of the H7N9 virus infecting humans today. Within ducks, and later within chickens, various strains of avian H7N9, H7N7 and H9N2 influenza exchanged genes with one another in different combinations. The resulting H7N9 virus began causing outbreaks among chickens in live poultry markets, from which many humans became infected. Given these results, the authors write, continued surveillance of influenza viruses in birds remains essential.


'/>"/>

Contact: Nalini Padmanabhan
nalini.padmanabhan@nih.gov
301-402-1663
NIH/National Institute of Allergy and Infectious Diseases
Source:Eurekalert

Page: 1

Related medicine news :

1. NIH-funded researchers begin trial of Shigella vaccine candidates
2. Better stroke care, everywhere: NIH-funded study boosts local hospitals clotbuster use
3. NIH-funded trial launched to assess experimental TB drug
4. NIH-funded analysis estimates effective PrEP dosing
5. NIH-funded study finds high HIV infection rates among gay and bisexual black men in the US
6. American Scientists Attempt to Sequence John Lennon's Genetic Code from the Beatle's Tooth
7. Harvard Scientists Commend Erchonia for Excellence in Clinical Research for the Zerona Laser
8. Is There a Science to Hiring? Demand for Scientists Grows 6%
9. UCLA and Chinese scientists analyze genetic makeup of human and mouse embryos in amazing detail
10. The Sergeant Sullivan Center Calls on Veterans, Advocates, Scientists, and Military Families to Provide Commentary on the VA Proposed Open Burn Pit Registry Questionnaire
11. Injecting iron supplement lets Stanford scientists track transplanted stem cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/2/2015)... As one of only 30 Illinois ... and Health Achievement and Recognition Program (SHARP) certification, ... by the Illinois Department of Labor to host this ... SHARP certification by the Occupational Safety and Health Administration’s ... continued to meet or exceed all of the necessary ...
(Date:5/2/2015)... Vancouver fencing company, QS Fencing, has recently announced that its ... related to their questions on railings and gates. Many people ... and patios. While that seems like an easy task, there ... rolls up their sleeve to start working. One of the ... gate that matches it. , Instead of spending hours worrying ...
(Date:5/2/2015)... ProText Kinetic 2 is a set of typography ... X. ProText Kinetic 2 features 40 animation presets ... X . Easily create interactive text videos without having ... Kinetic 2. , Using ProText Kinetic is as easy as ... presets in the FCPX timeline. Playback the default animation ...
(Date:5/2/2015)... 2015 We are pleased to announce ... Center as one of the Top Workplaces of 2015. ... addiction treatment field for their ethics and standards of ... to continue their educational efforts. The Delray Recovery Center ... forgetting their purpose – to help individuals heal from ...
(Date:5/2/2015)... On Tuesday April 7th, the patient ... to celebrate improvements in patient care. In 2014 the ... had zero acquired ventilator associated infections, zero central line ... was also recently named a Top Performer by the ... credited the teamwork of staff from all departments involved ...
Breaking Medicine News(10 mins):Health News:Essentra Specialty Tapes is Selected to Host Gov. Rauner and the Workers' Memorial Day Celebration 2Health News:Essentra Specialty Tapes is Selected to Host Gov. Rauner and the Workers' Memorial Day Celebration 3Health News:Professional Staff at QS Fencing Company Now Provides Advice on Railings and Gates 2Health News:Pixel Film Studios Announced the Release of Protext Kinetic 2 for FPCX. 2Health News:The Delray Recovery Center Named 2015 Top Workplace 2Health News:East Liverpool City Hospital Celebrates Patient Care Improvements 2
... going blind and not know it. Silently, without symptoms, Glaucoma ... ,January is Glaucoma Awareness Month, and the American Academy ... urges everyone to get a complete eye exam, especially if ... ,* African-Americans older than 40 ,* Hispanics ,* People with ...
... long been associated with an increased risk of injury ... says a recent study// by a University of Missouri, Columbia. ... Vinson, professor of community and family medicine, found that patients ... injured. However, patients who reported better sleep quality in the ...
... New research published in the Jan. 10 issue of ... University chemists// and North Carolina State University toxicologists, finds ... ,This research was based on the ... buckyball-containing amino acids. "Our results confirm that repetitive ...
... new software-based approach to detect osteoporosis while doing routine ... width of a part of the patient`s lower jaw. ... at the University’s School of Dentistry adapted the ‘active ... of Imaging Sciences and use it to automatically detect ...
... younger someone starts drinking alcoholic beverages, the more likely ... to relieve stress when older, a large new study ... among persons who started drinking at 14 or younger ... drinking are already higher than those of other drinkers,” ...
... undergone a hip replacement surgery and is resting comfortably//. ... the Mayo Clinic in Rochester, Minnesota said on its ... of the current president. His surgery came two days ... of former president Gerald Ford, who died Dec 26 ...
Cached Medicine News:Health News:Glaucoma: Silently Stealing Sight from Millions 2Health News:A Study Explores the Medical Potentials of Bucky Amino Acids 2Health News:Youngest Drinkers Likelier to Use Alcohol for Stress Relief as Adults 2
(Date:5/1/2015)... REDWOOD CITY, Calif. , May 1, 2015  AcelRx ... company focused on the development and commercialization of innovative ... today announced that Timothy E. Morris , chief ... events.  Details of the events are as follows: ... Tuesday, May 5 Location:  The Omni Berkshire Place, ...
(Date:4/30/2015)... ON , April 30, 2015 /PRNewswire/ - ... specialty pharmaceutical company with a focus on Omega-3 ... announced its operational highlights and financial results for ... dollar amounts referenced herein are in Canadian dollars ... 2014 have been significant, with the right strategic ...
(Date:4/30/2015)... SUNNYVALE, Calif. , April 30, 2015 /PRNewswire/ ... that it has signed an agreement with MIM ... for the TomoTherapy ® and CyberKnife ® ... both Accuray and MIM technology. This is Accuray,s ... to the development of the first iPad-based treatment ...
Breaking Medicine Technology:AcelRx Pharmaceuticals to Participate at Upcoming Investor Conferences in May 2Pivotal Therapeutics Announces 2014 Financial Results 2Pivotal Therapeutics Announces 2014 Financial Results 3Pivotal Therapeutics Announces 2014 Financial Results 4Pivotal Therapeutics Announces 2014 Financial Results 5Pivotal Therapeutics Announces 2014 Financial Results 6Accuray Signs Agreement with MIM Software Inc. to Develop Adaptive Therapy Software 2Accuray Signs Agreement with MIM Software Inc. to Develop Adaptive Therapy Software 3
... , , ... SILVER SPRING, Md. , Jan. 18 The ... a counterfeit and potentially harmful version of Alli 60 mg ... ) , Preliminary laboratory tests conducted by GlaxoSmithKline (GSK) -- ...
... , Kidney Care Partners, Members Provide Dialysis Equipment, ... Access to Life-Saving Treatment , PORT-AU-PRINCE, Haiti ... an earthquake that has devastated this Caribbean country, ... of millions of dollars as well as dialysis equipment, medications, ...
Cached Medicine Technology:FDA Warns Consumers about Counterfeit Alli 2FDA Warns Consumers about Counterfeit Alli 3U.S. Kidney Dialysis Community Responds to Haiti's Emergency Plea for Life-Saving Dialysis Care 2U.S. Kidney Dialysis Community Responds to Haiti's Emergency Plea for Life-Saving Dialysis Care 3
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
Medicine Products: