Montana mosquito season is extended

Sep 14, 2006

Unusually long-lasting hot weather conditions in Montana have prompted U.S. scientists to extend the season for mosquitoes that carry the West Nile virus.

The scientists say Montana's mosquito season will continue well into the last half of September, meaning West Nile virus is still a threat, said Montana State University entomologist Greg Johnson.

Johnson said mosquitoes usually stop biting when temperatures fall below 50 degrees during the night, but that hasn't occurred yet in most of Montana.

In his fourth season studying the West Nile virus, Johnsonhas found Culex tarsalis mosquitoes are the primary carrier in Montana. The mosquitoes usually starts flying shortly after sundown and continues until 1 or 2 a.m.

"Repellents containing DEET or picaridin are most effective," he said. "Several different trade names are available that contain various concentrations of DEET. A repellent containing 20 percent to 30 percent DEET is adequate."

Todd Damrow, state epidemiologist, said he encourages a variety of preventative measures for people. He recommends the use of repellents, avoiding times and places of heavy mosquito activity and covering exposed skin.

Copyright 2006 by United Press International

Explore further: Obama offers new accommodations on birth control

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

With kids in school, parents can work out

18 hours ago

(HealthDay)—Back-to-school time provides an opportunity for parents to develop an exercise plan that fits into the family schedules, an expert suggests.

Obama offers new accommodations on birth control

22 hours ago

The Obama administration will offer a new accommodation to religious nonprofits that object to covering birth control for their employees. The measure allows those groups to notify the government, rather than their insurance ...

Use a rule of thumb to control how much you drink

23 hours ago

Sticking to a general rule of pouring just a half glass of wine limits the likelihood of overconsumption, even for men with a higher body mass index. That's the finding of a new Iowa State and Cornell University ...

User comments : 0