Navigation Links
Source identification of H7N9 influenza virus causing human infections
Date:4/24/2013

In March 2013, a novel H7N9 influenza virus was identified in China as the etiological agent of a flu-like disease in humans, resulting in some deaths. A group of scientists, led by Professor Chen Hualan (National Avian Influenza Reference Laboratory, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences) have investigated the origins of this novel H7N9 influenza virus (Shi et al., 2013). Following analysis of H7N9 influenza viruses collected from live poultry markets, it was found that these viruses circulating among birds were responsible for human infections. These novel H7N9 viruses are reassortants in which the six internal genes were derived from avian H9N2 viruses; however the origins of their hemagglutinin (HA) and neuraminidase (NA) genes were unclear.

A total of 970 samples were collected from live poultry markets and poultry farms located in Shanghai and Anhui Province. Samples analyzed included drinking water, feces, contaminated soil, and cloacal and tracheal swabs. Of these samples, 20 were positive for the presence of H7N9 influenza viruses. All of the positive samples originated from live poultry markets in Shanghai. Of these 20 positive samples, 10 were isolated from chickens, 3 from pigeons, and 7 were from environmental samples.

The complete genome of three H7N9 isolates, from a chicken, pigeon, and environmental sample, was sequenced and deposited into the GISAID database. Genetic analysis of these isolates revealed high homology across all eight gene segments. Phylogenetic analysis of these novel H7N9 influenza virus isolates showed that that the six internal genes were derived from avian H9N2 viruses, but the ancestor of their HA and NA genes is unknown. According to the GenBank database, the HA genes of the novel isolated viruses were most similar to those from duck H7N3 influ
'/>"/>

Contact: YAN Bei
yanbei@scichina.org
86-106-400-8316
Science China Press
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Collaboration to establish new computational resources for metabolomics
2. Study shows resources giveaway in Latin America; Outdated model tramples human rights, environment
3. Microalgae could be a profitable source of biodiesel
4. Education resource focuses on teaching population genetics using current research
5. Pesticide application as potential source of noroviruses in fresh food supply chains
6. Assembling the transcriptome of a noxious weed: New resources for studying how plants invade
7. Report: Water and Agriculture in Canada: Towards Sustainable Management of Water Resources
8. Stem cell source an important factor, impacting ability to treat myocardial infarction
9. Hastings Center resources chart progress in debate over medical research with animals
10. Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
11. Marginal lands are prime fuel source for alternative energy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/22/2014)... overweight, you may be at greater risk for ... and cancer, according to a new study by ... stress can trigger biological responses similar to the ... normal inflammation is an important part of our ... chronic and life-threatening diseases. , In a ...
(Date:9/21/2014)... On the eve of United Nations General Assembly events ... of mothers, newborns and children, Grand Challenges Canada, funded ... in grants for 22 bold ideas to address this ... A program for Bangladeshi mothers working in garment ... thereby improving infant nutrition, reducing absenteeism due to child ...
(Date:9/21/2014)... the University of California, San Diego, have developed a ... control the activity of genes based on sequences of ... its application to human embryonic cells in a paper ... , "All of our cells have the same blueprint, ... John Whitaker, lead author of the report. "Skin cells ...
Breaking Biology News(10 mins):Obesity and stress pack a double hit for health 2Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 2Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 3Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 4Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 5Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 6Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 7Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 8Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 9Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 10Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 11Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 12Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 13Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 14Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 15Program predicts placement of chemical tags that control gene activity 2
... potential for cleaning up contaminated sites by growing plants able ... the plants break certain kinds of pollutants into harmless byproducts ... leaves or release into the air. The problem with plants ... is slow and halts completely when growth stops in winter. ...
... its deadly reputation, the gas carbon monoxide (CO) could ... a result of leading-edge UK research. Chemists at ... of using targeted small doses of CO which could ... transplants and people suffering from high blood pressure. ...
... (ACS) News Service Weekly press package (PressPac) with reports ... Engineering News. With more than 160,000 members, ACS is ... journal, or the American Chemical Society, as the source ... #1 FOR IMMEDIATE RELEASE Faster, more efficient ...
Cached Biology News:Scientists ramp up ability of poplar plants to disarm toxic pollutants 2Scientists ramp up ability of poplar plants to disarm toxic pollutants 3Scientists ramp up ability of poplar plants to disarm toxic pollutants 4Chemistry turns killer gas into potential cure 2American Chemical Society's Weekly PressPac - Oct. 10, 2007 2American Chemical Society's Weekly PressPac - Oct. 10, 2007 3American Chemical Society's Weekly PressPac - Oct. 10, 2007 4American Chemical Society's Weekly PressPac - Oct. 10, 2007 5American Chemical Society's Weekly PressPac - Oct. 10, 2007 6American Chemical Society's Weekly PressPac - Oct. 10, 2007 7American Chemical Society's Weekly PressPac - Oct. 10, 2007 8
(Date:9/22/2014)... Pa. (PRWEB) September 22, 2014 ... rapid diagnostics for the food and beverage industries, ... will be distributed under a non-exclusive agreement by ... and services. , Enartis, an Esseco Group company ... to winemakers in California and other global markets ...
(Date:9/22/2014)... N.J. , Sept. 22, 2014  WIRB-Copernicus ... and ethical review services for clinical research, announced ... (WIRB) has been reaccredited by the Association ... (AAHRPP), which endeavors to improve safeguards for clinical ... Donald A. Deieso , Ph.D., commented, "It ...
(Date:9/22/2014)... BETHESDA, Md. , Sept. 22, 2014  Spherix Incorporated ... fostering and monetization of intellectual property, today announced that the ... patent to the Company in the month of September that ... The issued patent is: USRE45,121 , ... 2014 , Filing date: Dec 27, 2012 ...
(Date:9/20/2014)... USA (PRWEB) September 20, 2014 Entries ... 2015 Prism Awards for Photonics Innovation . The ... the multi-billion dollar optics and photonics industry, and is ... and photonics , and Photonics Media . , ... the versatility of photonics, said SPIE CEO Eugene Arthurs. ...
Breaking Biology Technology:Invisible Sentinel's Test for Wine-Spoilage Microbe to be Distributed by Enartis in Multiple Markets Globally 2Invisible Sentinel's Test for Wine-Spoilage Microbe to be Distributed by Enartis in Multiple Markets Globally 3Western IRB (WIRB) Awarded AAHRPP Reaccreditation 2Spherix Notified by United States Patent & Trademark Office of New Standard Essential Patent Issued to Spherix 2Spherix Notified by United States Patent & Trademark Office of New Standard Essential Patent Issued to Spherix 3Entry deadline is 10 October for international photonics Prism Awards 2Entry deadline is 10 October for international photonics Prism Awards 3Entry deadline is 10 October for international photonics Prism Awards 4
... YORK, Jan. 15 - The Michael J. Fox,Foundation ... total funding for seven research studies aiming to ... drug makers, to,therapeutically target two genes -- LRRK2 ... only partially understood, role in Parkinson,s disease., ...
... Kan., Jan. 15 The Kansas Bioscience,Authority ... bring together,researchers nationwide to create products that ... diseases to disrupt the national economy or,to ... new Collaborative Biosecurity Research Initiative,(CBRI) are to ...
... Group plc (AIM:,PRG), the international pharmaceutical services ... Senior Director, Clinical Trial Management,specializing in oncology-related ... a leading role in the operations, strategic ... portfolio of oncology,business., Over the past ...
Cached Biology Technology:The Michael J. Fox Foundation Awards $2 Million to Shed Light on Role of LRRK2 and Alpha-Synuclein Genes in Parkinson's Disease 2Collaborative Biosecurity Research Initiative Launched to Target Animal and Public Health Threats Nationally 2Collaborative Biosecurity Research Initiative Launched to Target Animal and Public Health Threats Nationally 3Premier Research Names Patrick Melvin as Senior Director, Clinical Trial Management 2
... the Flp-In System creates isogenic cell ... levels of the protein of interest. ... Figure 3 (click link below). In ... chloramphenicol-acetyl transferase (CAT) was subcloned into ...
... for molecular weight determinations for petroleum-based applications. Multiple solvents can be used, such as water, ... ... ... ...
Fast, sensitive quantitation of total MEK 1/2 concentration....
... and flexibility press-to-seal silicone isolators can be ... researcher. They are available either pre-cut to ... that can be easily trimmed to prepare ... non-cytotoxic and can be used to isolate ...
Biology Products: