West Nile Fever Spreads Southward
From Times Wire Reports
Scientists fear that a bird and mosquito-borne virus that has killed four and sickened 33 in New York state is spreading southward with the season’s bird migrations and are warning health officials to be alert for crow deaths and other signs that have heralded the outbreak. West Nile fever, a rare and often encephalitic virus that had never before been diagnosed in the Western Hemisphere, is spread from birds to mosquitoes to humans.
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