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Study: Bird diversity lessens human exposure to West Nile Virus
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WUSTL in webkins virusthe News - Powered by Google WUSTL Home Public Affairs Home University News Medical News Sports News Radio Service Business, Law & Econ Culture & Living Science & Technology Contact Information TV/Radio Studio Visiting Our Campuses Campus Images Sports photography Commercial Filming and Photography Commercial Use of Names and Symbols Domain Name policy Record (newspaper) Campus Calendars WUSTL News Summary Publications Online Facts, Guides & Maps Washington University in St. Louis News & Information > News Tips > Study: Bird diversity lessens human exposure to West Nile Virus The more the merrier By Tony Fitzpatrick Oct. 6, 2008 -- This Skin Eating Virus one's for the birds. A study by biologists at Washington University in St. Louis shows that the What Virus Infects Bacteria more diverse a bird stomach virus in maryland population is in an area, the less chance humans have of exposure to West Nile Virus (WNV). Now, let's ie ptch virus hear it for the birds. When the red, red robin comes bob, bob bobbin' along, think West Nile Virus (WNV). Robins are anthrophilic - they love being around adeno virus humans - and it's relatively easy for mosquitoes to take their blood meals from them because robins feed so much on the ground, making them a very common reservoir species for transferring WNV to humans. "The bottom line is that where there are more bird species in your backyard, you have much lower risk of contracting West Nile fever," said Brian Allan, doctoral candidate in biology in Arts & herpes virus transmission Sciences at Washington University in St. Louis. "The mechanisms are similar to those described for the ecology of Lyme trend micro virus scan disease. Anti Spyware Beta Virus Microsoft Most birds are poor reservoirs for West Nile windows xp 64bit anit virus Virus, and so mosquito bites taken on them are 'wasted' from Hot Virus Testing In Urban Areas the perspective of the virus. Where many bird species exist, very few mosquitoes get infected, and so we humans are at low risk. A few bird species are highly competent reservoirs, and hpv virus to vaccine these tend to occur in urbanized and suburbanized areas where bird diversity suffers." The most common "reservoir" species that urbanites and suburbanites and even rural dwellers in heavily farmed landscapes see are crows, grackles, house finches, blue jays, sparrows and American robins, what is a file virus with the robin being the most prolific carrier of WNV. Robins are anthrophilic — they love being around humans — and it's relatively easy for mosquitoes to take their blood meals from them because robins feed so much free virus download on the ground. Allan, his advisor Jonathan M. Chase, Ph.D., Can Facs See Virus associate professor of biology, and 14 collaborators from numerous institutions will publish their findings in a forthcoming issue of Oecologia. While diversity of bird species is important in virus scanner trials this scenario, that factor alone doesn't tell the whole story. "It's not just about the number, but their relative proportions," Allan said. "It's a combination of richness - the number free virus protection review of species — and evenness — their relative proportions. In urban and suburban areas you see lower species richness and lower community evenness. For instance, you might have five species present, but in 100 animals 90 are just one species. That's why species number is only half the equation." Allan and numerous graduate students began the research five years ago as they just entered graduate school what is a virus and the topic of West Nile Virus was just beginning to receive lots of attention and the ecology of the organism hadn't been studied much. They identified a variety of field sites, both urban and rural, with their base anti virus scan of operations at Washington University's Tyson Research Center, a facility 22 miles west of St. Louis firewall and virus protection software comprised of 2,000 acres of woods, glades and prairie. They performed bird surveys at the sites, put up a variety of mosquito traps and studied different mosquito species and their ability to transmit the virus. Facs Of Virus Using kits provided virus outbreaks and california by the Center for Disease Control, they tested the mosquitoes and found three positive google adsense virus pools. "The infection rates are actually remarkably low, with maybe one in 1,000 carrying WNV," Allan said. They expanded their study to include mosquito molecular anatomy of cold virus detailed infection data from the St. Louis City one hoax virus its occureance and St. Louis County Health departments. They saw the same patterns. The greater bird diversity, the lesser incidence of WNV; the lesser diversity, the greater likelihood of WNV. To broaden their finding even more, Allan and his colleagues used national data sets on human cases of WNV and a tool called the Shannon Diversity Index to estimate the diversity of bird populations across the U.S. These data are conducted nationwide by amateur bird watchers for the United States Geological Survey's Breeding Bird Surveys. "We're seeing locally and nationally that bird diversity is a buffer against the occurrence of West Nile Virus in humans," Allan said. "That's a win-win situation for both conservation and public health." View Current: Business, Law & Economics | Culture & Living | Medical Science & Health | Science & Technology Related Information Media Assistance: Tony Fitzpatrick Senior Science Editor [email protected] (314) 935-5272 Contact Information • Brian Allan Doctoral candidate in biology [email protected] (314) 935-8466 Related Links: • Brian Allan's Web page • Jonathan Chase's Web page • Article: After drought, ponds "keep up with the Joneses" • Tyson Research Center • Article: Chase named director of Tyson Research Center Related Groups: Schools: • Arts & Sciences • School of Medicine Departments: • Biology • Biostatistics Programs: • Allergy / Immunology • Tyson Research Center - View All Groups Related Topics: • Environment • HIV/AIDS / Infectious Disease • Life Sciences • Medical Science • Science & Technology - free computer virus scan and fix View All Topics Revised: Monday, Oct. 6, 2008 Email this page Print ready page Subscribe WUSTL News by E-mail News & Information | Medical News | Office of Public Affairs | WUSTL Home Please contact us and let us know how we can assist you. 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