Navigation Links
West Nile virus transmission linked with land-use patterns and 'super-spreaders'
Date:10/20/2011

enough to cause human infections.

"The mosquitoes that bite humans most are actually not as important in transmission of West Nile virus to humans because they rarely bite birds and thus rarely get infected in the first place," Kilpatrick said.

"Instead, it's the species that feed mostly on birds and frequently get infected, but occasionally feed on people, that are most important."

Millions of birds have died from West Nile virus infection, with dramatic effects on the populations of some species. Crows, for example, are much less abundant than they were before the virus arrived.

The robin population, which had been growing rapidly, has leveled off.

"Robins were on a steady upward trajectory thought to be linked to human land use--they love lawns and agricultural fields," Kilpatrick said.

"Crow populations were growing even faster. Now crow populations have crashed downward and robins have leveled off, and we suspect that's due to West Nile virus."

The worst human outbreaks of West Nile virus in the United States occurred in 2002 and 2003.

According to Kilpatrick, it's not clear whether the reduction in human disease since then represents a long-term trend or short-term variability.

"It may be that with climatic conditions favorable for the virus we could again get very intense years of transmission," he said.

"We don't know yet how much of the year-to-year variation can be explained by climatic conditions or other factors, such as acquired immunity in birds or humans."

Many other diseases caused by mosquito-borne or tick-borne viruses could potentially be introduced to the United States from overseas, Kilpatrick said.

Understanding the ecology of these viruses may lead to strategies that could prevent a newly introduced pathogen from establishing itself as successfully as West Nile virus.


'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scientists report major advance in human antibody therapy against deadly Hendra virus
2. Pitt biologists find surprising number of unknown viruses in sewage
3. Manipulated gatekeeper: How viruses find their way into the cell nucleus
4. XMRV, related viruses not confirmed in blood of healthy donors or chronic fatigue syndrome patients
5. Cowpox virus: Old friend but new foe
6. Team finds stable RNA nano-scaffold within virus core
7. Watching viruses friend a network
8. Virus attacks childhood cancers
9. Single protein, key to ebola virus infection, could aid in drug design
10. Researchers map pathway of infection for a common, potentially life-threatening respiratory virus
11. Software predicted risk in California West Nile virus epidemic
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
West Nile virus transmission linked with land-use patterns and 'super-spreaders'
(Date:1/22/2015)... Washington , January 20, 2015 Investorideas.com, ... tech stocks, releases video from the CES 2015 (Consumer Electronics ... Apollo Robbins . Apollo shows how easily ... smart wallet, a product of NXT-ID, Inc. (NASDAQ: ...
(Date:1/22/2015)... Jan. 22, 2015 Infinisource has launched its new NXG ... model. The G2 sets a higher standard for collecting attendance ... management solution. With plug-and-play installation, touch screen interface and seamless ... a robust time collection solution for the small to mid-size ...
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ... the "iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... Apple introduced the fingerprint reading feature with the iPhone ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... biomedical engineer and colleagues have developed a method that, applied ... with increased breast cancer risk the pain and stress of ... lesion. The universal technology will give radiologists greater confidence ... The American Cancer Society recommends that women with certain ...
... an effort to increase understanding of the medical device ... of product development more effectively, researchers at Stanford University ... device development process. Published in the June ... , the model was constructed based on best-practice analysis ...
... Fla. -- The U.S. National Science Foundation (NSF) announced ... of building a multi-decadal time series of Agulhas Current ... Observing System. Led by Principal Investigator, Lisa Beal, ... Marine and Atmospheric Science, the international team will include ...
Cached Biology News:New MRI technique could mean fewer breast biopsies in high-risk women 2Stanford researchers publish comprehensive model for medical device development 2Stanford researchers publish comprehensive model for medical device development 3NSF provides $3.4 million to study climatically important Agulhas Current 2
(Date:1/22/2015)... The laboratory information management systems market is a rapidly ... advancements due to factors such as rising pressure to ... systems, and increasing government support for adoption of HCIT ... in the market focus on technological advancements to further ...
(Date:1/22/2015)... 22, 2015 zFlo Motion , a ... announce an exciting product from a new partner. STT-Systems ... over the past 15 years, with offerings in the optical-motion ... 3D IMU system (inertial measurement unit), iSen, is opening eyes ...
(Date:1/22/2015)... 22, 2015 Diagenode, Inc., a ... the Bioruptor® and complete solutions for epigenetics research, ... immunoprecipitation, alleviating the need for manual processing. The ... for ChIP of histones or transcription factors and ...
(Date:1/22/2015)... 22, 2015   GenoSpace , a precision medicine software company ... the broad use of genomic, imaging and other biomedical data ... Michelle Munson , CEO of Aspera, an IBM Company, ... - http://photos.prnewswire.com/prnh/20150122/170713 "We are pleased ...
Breaking Biology Technology:Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 43D Motion Capture Just Got Easy 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2
... - The Culex quinquefasciatus mosquito poses a ... of elephantiasis-causing worms and encephalitis-inducing viruses. An international team ... and the SIB Swiss Institute of Bioinformatics sequenced its ... articles published in today,s issue of Science, describe results ...
... - YM BioSciences Inc. (NYSE Amex: YMI, TSX:YM), ... its CYT387 JAK1/JAK2 inhibitor program demonstrating that CYT387 ... which may provide significant clinical advantages. CYT387 is ... study at Mayo Clinic in patients with myelofibrosis. ...
... Inc. - (OTC Bulletin Board: BHRT ) ... of autologous cell therapies for the treatment of cardiovascular ... commitment from Seaside National Bank and Trust for a ... Company,s loan with Bank of America. The loan is ...
Cached Biology Technology:Major disease-vector mosquito reveals the secrets of its immune system 2YM Biosciences To Present Poster On CYT387 At The European School Of Haematology International Conference 2YM Biosciences To Present Poster On CYT387 At The European School Of Haematology International Conference 3Bioheart, Inc. Announces Loan to be Assumed by Seaside 2Bioheart, Inc. Announces Loan to be Assumed by Seaside 3
... in your 35mm dish without transferring ... Chamber has separate openings for solution ... fluctuations of the liquid level in ... from entering the chamber. An adjustable ...
... Five cells (BTI-TN-5B1-4) derived from Trichoplusia ... shown to be capable of expressing ... proteins compared to other insect cells. ... features:- -Rapid doubling time as adherent cultures- Quick ...
... steadylite plus assay system offers ... sensitivity, Designed for batch-processing systems, ... higher density microplates such as ... free, Convenient storage conditions ( ...
... This kit consists of universal lysis buffer, ... primers for 100 25 l volume PCR ... of Gram negative or positive rod and ... Pneumoniae, Bacillus Cereus, Staphylococcus Aureus, Streptococcus Agalactiae, ...
Biology Products: