HOME >> BIOLOGY >> NEWS
Asian bird flu became highly pathogenic through continued circulation and gene swapping

(MEMPHIS, TENN.--July 8, 2004) An avian influenza virus that has caused three major outbreaks among poultry and killed several people in East Asia over the past seven years arose through a series of genetic reassortment events with other viruses. This study finding, by scientists from St. Jude Children's Research Hospital, the People's Republic of China, China's Special Administrative Region of Hong Kong, Thailand, Vietnam and Indonesia, is published in the July 8 online edition of Nature.

Reassortment is the swapping of genes when two or more viruses infect the same animal.

The researchers say that their study of the genetic makeup of H5N1 subtypes collected since 1997 traces the evolution of the virus into a dangerous pathogen through a series of reassortment events. Results of the study indicate that domestic ducks in southern China played a key role in the generation of this virus. The H5N1 virus forced health authorities to slaughter millions of chickens in order to prevent the spread of the disease, which can quickly wipe out poultry in open-air markets and farms and spread to other flocks.

The investigators warn that outbreaks of H5N1 in East Asian poultry populations must be rapidly and effectively controlled to prevent H5N1 from evolving into a virus that causes a human pandemic, or worldwide epidemic. By cleaning up open-air markets and regularly slaughtering infected birds, Hong Kong remained free of H5N1 outbreaks in poultry during the 2004 influenza crisis, according to Robert Webster, Ph.D., member of Infectious Diseases department and holder of the Rose Marie Thomas Chair at St. Jude, and Richard Webby, Ph.D., also of the department of Infectious Diseases at St. Jude.

"In order to reduce the ability of H5N1 to trigger another poultry epidemic, officials in East Asia must follow Hong Kong's lead," Webster said. "Otherwise, H5N1 will likely continue to infect birds and other animals and eventually could evolve into a dangerous
'"/>

Contact: Bonnie Cameron
bonnie.cameron@stjude.org
901-495-4815
St. Jude Children's Research Hospital
8-Jul-2004


Page: 1 2 3 4

Related biology news :

1. Asian elephant sex pheromone transporter revealed
2. East Asian governments urged to harness market forces to improve environment, save money
3. Mongolian road threatens last great over-land migration of Asian wildlife
4. Rare Asian dolphin threatened by human activities
5. Asian dust storm causes plankton to bloom in the North Pacific
6. Sea Grant research shows electric barrier may stop Asian carp
7. New program helps protect Asian elephants through crop-raiding prevention
8. Indian caste groups have differing genetic relationships to Europeans and Asians
9. Study supports out-of-Africa origin for East Asians
10. Major fossil find reveals Asian origins of salamanders
11. Scientists, ships, aircraft to profile Asian pollution and dust

Post Your Comments:
(Date:3/12/2015)... 12, 2015 Beta Systems ... and access management (IAM) solution for a fixed ... Beta System,s new IAM package, customers benefit from ... from multiple IAM implementations across different industries. The ... well as any necessary services and consulting. It ...
(Date:3/11/2015)... Mar. 11, 2015 Research and Markets ... "Access Control Market by Product, Application & By ... report to their offering. , This report ... reach $10.4 billion by 2020, with an estimated CAGR ... covers the products types such as contact cards & ...
(Date:3/10/2015)... NEW YORK , March 10, 2015  Continuing ... and the Unexpected, Hammacher Schlemmer introduces The Eye ... user,s identity before granting access to secure websites or ... trusted to verify travelers at international borders, the device ... 240 distinctive pattern points of the iris, converting them ...
Breaking Biology News(10 mins):Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2Hammacher Schlemmer Introduces The Eye Scanning Password Authenticator 2
(Date:3/26/2015)... ReliantHeart, Inc., an innovative supplier of advanced mechanical ... transit-time flow measurement solutions, are collaborating on a miniature ... the HeartAssist5® Left Ventricular Assist Device (LVAD). ... and peace of mind. , The Transonic flow ... 1/6th of the power required by earlier flow board ...
(Date:3/25/2015)... 26, 2015 Agnition announced today that ... American Farmer, airing for the first time at 7:30 ... American Farmer will explore the extremely important role soil ... with a patented Microbial Catalyst™ technology that enhances soil ... The segment will air again on April 28. , ...
(Date:3/25/2015)... (PRWEB) March 25, 2015 Laboratory ... Top-Loading Balances and Analytical Balances to get best-performing ... line of weighing balances from the trusted brand ... Balances increase your efficiency by providing a ... of samples. Weighing modes include parts counting, percent ...
(Date:3/25/2015)... Francisco, CA (PRWEB) March 25, 2015 ... Support for Novel Mechanism of Action in Neuromuscular ... 25, 2015 – Cytokinetics, Incorporated (Nasdaq: CYTK) announced ... fast skeletal muscle troponin activator tirasemtiv in the ... a Phase IIa “Evidence of Effect” or hypothesis-generating ...
Breaking Biology Technology:LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 2LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 3Agnition to be Featured In Upcoming Episode of American Farmer on RFD-TV 2New Economical Top-Loading and Analytical Symmetry Balances from Cole-Parmer 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 3Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 4Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 5Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 6
Cached News: