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:
*Name:
*Comment:
*Email:


(Date:3/22/2017)... , March 21, 2017   Neurotechnology ... object recognition technologies, today announced the release of ... (SDK), which provides improved facial recognition using up ... on a single computer. The new version uses ... improve accuracy, and it utilizes a Graphing Processing ...
(Date:3/16/2017)... CeBIT 2017 - Against identity fraud with DERMALOG solutions "Made in Germany ... ... one project, multi-biometric solutions provide a crucial contribution against identity fraud. (PRNewsFoto/Dermalog Identification Systems) ... Used combined in one project, multi-biometric solutions provide a crucial contribution ... ...
(Date:3/7/2017)... LAKE CITY , March 7, 2017   ... that help top global companies identify the best talent, ... as Chief Sales Officer (CSO) and Diana ... Kucer,s appointments round out a seasoned executive team poised to ... and beyond, building on a year of record bookings ...
Breaking Biology News(10 mins):
(Date:3/27/2017)... ... 2017 , ... IsoPlexis Corporation (IsoPlexis), a venture capital-funded life ... through a single-cell precision engineering platform, today announced it has received an exclusive ... laboratory of Dr. James Heath at the California Institute of Technology, a pioneer ...
(Date:3/27/2017)... , ... March 27, 2017 , ... ... (mCRC) generally produce small, heterogeneous samples with limited tumor content in a large ... to be resolved, such as the need for reliable detection of low abundance ...
(Date:3/27/2017)... ROCKVILLE, Md. , March 27, 2017 /PRNewswire/ ... $108.5 billion for 2016, according to a new ... patients, medical lab testing is performed to evaluate ... determine individual therapy, among other reasons.  The healthcare ... Services Market , provides an overview of ...
(Date:3/27/2017)... The new research portal will give visitors quick and ... Valero Energy , offering extensive market research on their performance ... ... The latest trend gaining momentum in the ... though touted as a green alternative to fossil fuels, is ...
Breaking Biology Technology:
Cached News: