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:5/31/2019)... ... 29, 2019 , ... FileWave, the multi-platform endpoint management solution ... of version 13.1. The new version extends FileWave’s mobile device management features on ... release functionality. Version 13.1 builds on FileWave’s version 13 that was released in ...
(Date:5/31/2019)... ... ... Enso Discoveries Chief Executive Officer, Patrick Farley, is honored to give back to ... his gratitude and respect for those who have served their country. In honor of ... presented a check for $1,000 to the Green Beret Foundation, via former US Army ...
(Date:5/24/2019)... WOODLANDS, Texas (PRWEB) , ... May 24, 2019 , ... ... been published and is now available on the company’s global website. , Crystallography Times ... on single crystal X-ray diffraction. It serves the X-ray analysis community by presenting the ...
Breaking Biology News(10 mins):
(Date:5/2/2019)... , ... May 02, 2019 , ... Stay on top ... medical device and food industries. Access to all webinars is free, so be sure ... in your field! , Visit http://www.xtalks.com to see our upcoming webinars: , ...
(Date:4/25/2019)... ... , ... Frank is an albino, deaf Great Dane. His owners rescued him when he was ... issues. Despite his hearing impairment, he was always an active and playful pup. Frank bonded ... every day. As the two grew, playtime became rougher and Frank ended up injuring his ...
(Date:4/16/2019)... ... April 16, 2019 , ... ... their project partner, the U.S. Army Center for Environmental Health Research (USACEHR), with ... Combined In-Licensing/Out-Licensing.” , Blue Sources, a veteran-owned company located at the Frederick Innovative ...
(Date:4/12/2019)... , ... April 12, 2019 , ... ... developments in neurotechnology and will educate about innovative tools and devices being used ... local listings for more information. , This segment of Advancements will focus on ...
Breaking Biology Technology:
Cached News: