Mosquitoes--Not Birds--May Have Carried West Nile Virus Across U.S.

Mosquitoes--not birds as suspected--may have a played a primary role in spreading West Nile virus westward across the United States, according to a study by researchers at the Johns Hopkins Bloomberg School of Public Health. The study is among the first to examine the role of mosquitoes in the dispersion of West Nile virus across the U.S. and is published in the March 2 edition of Molecular Ecology.

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