HOME >> BIOLOGY >> NEWS
Mosquitoes infected with La Crosse encephalitis found in four Southwest Virginia counties

Blacksburg, Va. -- Virginia Tech entomologists have documented for the first time the presence of mosquitoes infected with La Crosse virus in four Southwest Virginia Counties.

Sally Paulson, an associate professor of entomology, said the find from samples taken last year and recently analyzed was surprising because no human cases of the disease had been reported in the counties before.

"It surprised me to get so many positives from so few samples from a place I wouldn't have expected any," Paulson said.

The counties in which the positive samples were collected for the first time were Montgomery, Giles, Pulaski, and Floyd. The disease had previously been found in the counties of Wise, Dickenson, Buchanan, and Tazewell. About 15 human cases of La Crosse encephalitis have been reported in Virginians in the past 10 years.

The positive results were returned from approximately 135 "pools," samples containing a number of mosquitoes captured at individual locations. Because the laboratory report only reports a positive result from a pool, Paulson said it is impossible to say exactly how many individual mosquitoes were infected.

"We had seven positives reported, and our collecting methods did not target the species that carry La Crosse virus," she said. Paulson and her graduate students collected the samples as part of a project to check for West Nile virus. Different mosquito species are implicated in the two diseases.

The mosquitoes that spread La Crosse virus are members of the Aedes and Ochlerotatus genera. The Eastern Tree Hole Mosquito is the primary vector for the disease, though the Asian Tiger Mosquito has also been implicated in its spread. Both live in woodland habitats but can be abundant in urban and suburban areas.

According to a fact sheet on the disease from the Centers for Disease Control, about 70 people are infected with La Crosse encephalitis nationwide each year, though the agency considers the num
'"/>

Contact: Stewart MacInnis
macinnis@vt.edu
540-231-5863
Virginia Tech
30-May-2003


Page: 1 2

Related biology news :

1. Rutgers-Newark scientist: Mosquitoes may carry lethal parasite
2. Mosquitoes vs. malaria: How we can win the fight
3. Mosquitoes repelled by tomato-based substance
4. Mosquitoes have discriminating tastes, UF researchers find
5. Curing Malaria, Controlling Mosquitoes Symposium Set For AAAS Meeting
6. UF Researcher Designs Pill To Control Mosquitoes
7. Late invasion of infected cells into the brain causes HIV dementia say Temple researchers
8. Children with HIV more likely to utilize health services than infected adults
9. Salmonella uses molecular staples to change structure of infected cells
10. Antiretroviral therapy in HIV-infected children can stop neurological damage
11. Loss of lean body mass in HIV-infected men linked to immunological processes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/5/2018)... Ill. (PRWEB) , ... October ... ... Edwardsville, in partnership with the University of Illinois Extension and Monroe County ... Department of Agriculture (USDA) National Institute of Food and Agriculture (NIFA) Non-Land ...
(Date:10/5/2018)... DIEGO (PRWEB) , ... October 04, 2018 , ... Nothing ... cooking classes have become so popular. , Cooking appeals to companies because ... as group interaction, team cohesion, collaboration and decision-making skills. It’s also appealing in ...
(Date:10/2/2018)... GIBRALTAR, Gilbraltar (PRWEB) , ... October 02, 2018 , ... ... gaps between research, development, and access to stem cell therapy, has launched the pre-sale ... company is building a dual blockchain-based platform that will connect patients and stem cell ...
Breaking Biology News(10 mins):
(Date:10/5/2018)... ... October 04, 2018 , ... Earthres Group, Inc., a ... the company’s brand identity and better reflects its current breadth of markets and ... engineering expertise and related support services to clients in seven market sectors, and ...
(Date:10/2/2018)... ... 2018 , ... The Alliance for Clinical Research Excellence and ... standards and testing of procedures for voluntary accreditation of clinical research sites. The ... Quality Management Systems and Chief Quality Officer, is underway in association with ...
(Date:9/27/2018)... N.J. (PRWEB) , ... September 26, 2018 , ... ... DNA testing are way ahead of their primary care physicians, according to a ... For this study, patients and doctors were asked about consumer adoption of fitness ...
(Date:9/24/2018)... ... ... ReGrow Helmet , the most advanced laser hair treatment device, is ... regrowth in the comfort of one’s home. Early campaign backers will save 40% off ... design and advanced technology of the ReGrow Helmet will lead the industry in engineering ...
Breaking Biology Technology:
Cached News: