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:4/28/2017)... York, NY (PRWEB) , ... April 28, 2017 , ... ... fact, there are a number of illnesses that are unclear as to whether or ... of their heads. Bronchitis is one of these illnesses. So, FindaTopDoc took a look ...
(Date:4/28/2017)... ... 2017 , ... Getting enough sleep affects much more than energy – it also has mental ... sleep can compromise motor reaction time, which can increase the risk of having a car ... following tips from the NSF to help you sleep better and feel better:, ...
(Date:4/28/2017)... Fairfax, VA (PRWEB) , ... April 28, 2017 , ... ... elected volunteer board members and officers for 2017-2018. The annual board election process has ... serving on a volunteer basis. , Thomas C. Dickerson, Ed.D., FACHE, succeeds Jim Hamilton, ...
(Date:4/28/2017)... National Harbor, Md. (PRWEB) , ... April 28, ... ... Urgent Care Association of America (UCAOA) and College of Urgent Care Medicine will ... Momentum 2017 workshops, sessions and speakers will help those in the industry adapt ...
(Date:4/28/2017)... ... ... Overseer at The House of Yahweh in Abilene, Texas, has published a new post that ... Yisrayl says with so many titles and names for the Creator, it’s hard for many ... Scripture, backed with a lot of research, the truth is undeniable. , “If you ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... --  ZappRx, Inc ., a digital health company focused on ... it closed $25 million in Series B funding led by ... Seattle that is part of a ... B round included participation from SR One , who ... (formerly Google Ventures). As part of the financing, ...
(Date:4/20/2017)... , April 20, 2017 ... platform, the first non-viral gene expression technology that enables ... the eye to address a wide range of ophthalmic ... Medicines and Healthcare products Regulatory Agency (MHRA) to advance ... ...
(Date:4/19/2017)... CRH) (NYSE MKT: CRHM) (the "Company"), announces that it will participate ... the Sheraton Hotel in Toronto, Ontario . ... is scheduled to present on Tuesday, May 2 at 10:00 am. ... the Board, Tony Holler will also attend the event. ... For more details about the ...
Breaking Medicine Technology: