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 Study shows resources giveaway in Latin America; Outdated model tramples human rights, environment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:7/30/2014)... York University is paving the way for a ... and military troops exposed to poisonous chemicalsparticularly those ... article in the current issue of the journal ... organophosphates, which are compounds commonly used in pesticides ... by NYU School of Engineering Associate Professor of ...
(Date:7/30/2014)... A deep-sea octopus protected and tended her eggs until ... published July 30, 2014 in the open-access journal ... Aquarium Research Institute and colleagues. , Octopuses typically have ... females protect and take care of their fertilized eggs ... eggs for 1 to 3 months, but little is ...
(Date:7/30/2014)... Everybody knows the shortest distance between two points is ... that sperm have been taking the familiar axiom to ... usually thought to be intense, with each racing for ... in some species, sperm form cooperative groups that allow ... , A new study, conducted by Heidi Fisher, ...
Breaking Biology News(10 mins):Engineering a protein to prevent brain damage from toxic agents 2Deep-sea octopus has longest-known egg-brooding period 2When cooperation counts 2When cooperation counts 3
... Researchers from Michigan State University,s departments of Electrical ... new wearable sensor network to assess a person,s physical ... engineering professor Subir Biswas, participants will wear three small, ... lower leg that during any physical activity will ...
... Research (SFBR) in San Antonio have found a gene ... in the blood as a result of a high-cholesterol ... developed at SFBR that has normal blood levels of ... low-cholesterol diet, but extremely elevated levels of LDL cholesterol ...
... Animal flocks, be it honeybees, fish, ants or birds, ... decisions at a moment,s notice, a phenomenon which has ... today, Wednesday 15 September, in New Journal of ... German Physical Society), uses a particle model to explain ...
Cached Biology News:Wearable sensor technology to measure physical activity 2Scientists find gene for high cholesterol in blood 2Understanding behavioral patterns: Why bird flocks move in unison 2
(Date:7/30/2014)... Yuma Regional Cancer Center Officially Opens ... comprehensive cancer care to Yuma, Arizona. , The ... has officially opened. A Mayo Clinic Care Network ... as open, semi-private and private infusion rooms, oncology ... Center, hematology, rehabilitation center, a pain management program ...
(Date:7/30/2014)... 30, 2014  Dyadic International, Inc. ("Dyadic") (OTCQX: ... and proprietary technologies are used to discover, develop, ... the bioenergy, bio-based chemical, biopharmaceutical and industrial enzyme ... Dubinski as Vice President and Chief Financial Officer. ... and information technology operations for Dyadic and will ...
(Date:7/30/2014)... , July 30, 2014   Epic Sciences, ... and develops novel diagnostics to personalize and advance the ... of Gregory T. Lucier as chairman of ... and CEO of Life Technologies (formerly Invitrogen). Mr. Lucier ... Epic commercializes its circulating rare cell analysis platform with ...
(Date:7/30/2014)... July 30, 2014  RXi Pharmaceuticals Corporation ... company focused on discovering, developing and commercializing ... using RNA-targeted technologies, today announced that their ... for the reduction of recurrence of hypertrophic ... been initiated. Logo - ...
Breaking Biology Technology:Sate-of-the-Art Yuma Regional Cancer Center Officially Opens 2Thomas Dubinski joins Dyadic as Chief Financial Officer 2Thomas Dubinski joins Dyadic as Chief Financial Officer 3Thomas Dubinski joins Dyadic as Chief Financial Officer 4Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 2Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 3RXi Pharmaceuticals Expands Clinical Program with Initiation of Third Phase 2a Study with RXI-109 for Treatment of Hypertrophic Scars 2RXi Pharmaceuticals Expands Clinical Program with Initiation of Third Phase 2a Study with RXI-109 for Treatment of Hypertrophic Scars 3RXi Pharmaceuticals Expands Clinical Program with Initiation of Third Phase 2a Study with RXI-109 for Treatment of Hypertrophic Scars 4RXi Pharmaceuticals Expands Clinical Program with Initiation of Third Phase 2a Study with RXI-109 for Treatment of Hypertrophic Scars 5
... SAN DIEGO , June 2 Neurocrine Biosciences, Inc. (Nasdaq: ... Executive Officer of Neurocrine Biosciences, will be presenting at the Jefferies 2010 Global ... in New York . , ... The live presentation for the Jefferies conference takes place on Wednesday, June ...
... International ... ... 2010 -- The International Food Information Council (IFIC) 2010 “ Consumer Perceptions of Food ... consider its potential benefits for reducing the impact of food and food production on ...
... Repligen Corporation (Nasdaq: RGEN ) announced today that it will ... Wednesday, June 9th, 2010 , before the market opens.  The Company President ... conference call and webcast on the same day at 10:00 a.m. EDT ... Company. , , , ...
Cached Biology Technology:Neurocrine Biosciences to Present at the Jefferies 2010 Global Life Sciences Conference and the 9th Annual Needham Healthcare Conference 2Interest in Environment & Sustainability Prevails in Food Technology Survey 2Interest in Environment & Sustainability Prevails in Food Technology Survey 3Interest in Environment & Sustainability Prevails in Food Technology Survey 4Interest in Environment & Sustainability Prevails in Food Technology Survey 5Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2010 Financial Results 2Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2010 Financial Results 3
Phosphotyrosine IgG mouse monoclonal antibody: Alkaline Phosphatase conjugate...
Rabbit polyclonal to GPCR G2A ( Abpromise for all tested applications). entrezGeneID: 29933 SwissProtID: Q9UNW8...
... This reagent has been developed ... for the reduction of nonspecific background ... Traditional methods describe blocking peroxidase with ... hydrogen peroxide in combination with additional ...
Rabbit polyclonal to Wilms Tumor Protein ( Abpromise for all tested applications). entrezGeneID: 7490 SwissProtID: P19544...
Biology Products: