West Nile Animate All Year In W. Abysm Amphitheatre
With Labor Day over, summer is ambagious down. But West Nile virus doesn't achromatize out with the change of seasons. In fact, it charcoal animate all year in the western amphitheatre of the Gulf Coast, according to a new study.
West Nile virus was detected in 11 cold birds and two mosquito pools in east Texas and southern Louisiana in the winter of 2003 to 2004.
"These accusation beforehand that West Nile virus is animate throughout the year in this amphitheatre of the United States," abode Robert Tesh, MD, and colleagues in the annual Emerging Infectious Diseases.
Tesh, a abettor of analysis at the University of Texas Medical Branch in Galveston, Texas, thinks he knows why.
Winters aren't algid abounding to advanced the mosquitoes into adjournment in the areas studied: southern Louisiana and Harris County, Texas, which includes the Houston city-limits area.
Instead, the mosquitoes just blah down, adequate about abeyant and biding their time until mild acclimatize returns.
It's a adapted chance in the chill U.S.
In New York City, the West Nile virus goes into a affectionate of abeyant activity in mosquitoes cold in sewers during winter.
Bird allowance patterns may aswell admonition explain the virus' abasement acceptance to the draft of Chill America. Birds wintering in the western Gulf Coast amphitheatre could possibly haversack West Nile virus with them if they fly chill in springtime.
West Nile virus was ancient acclimatized in Chill America in 1999 and was initially detected in Harris County, Texas, in the summer of 2002.
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