Article: Experts Find Accomplice Of Nile Virus; Sparrows Are Incubators, But Puzzle Still Incomplete

The virus could be seen in the lab. The mosquitoes that transmitted it turned up in traps. And the carcasses of the crows that were its chief victims were strewed across the landscape from Vermont to North Carolina.

But as West Nile virus swirled out of New York this year, leaving behind a trail of dying wildlife and anxious humans, scientists suspected that something else was helping it spread.

Something that served as a "reservoir host," where the virus could multiply to enormous levels. Something that wasn't necessarily killed by the virus, as crows were. Something that, like a viral gas tank, helped refuel the mosquitoes transmitting the disease.

One culprit, new research suggests, may ...

Related newspaper, magazine, and journal articles:

Newsweek Harper's Magazine The Washington Post Chicago Tribune Crain's Chicago Business PRNewswire Pediatric News The Nation Advertising Age The Economist (US) A FREE trial gives you access to over 80 million articles! Access over 6,500 publications with a FREE trial!