West Nile Toll Now 5054 Cases, 228 Deaths; Doctors fear West Nile virus has mutated

Doctors fear West Nile virus has mutated into more damaging form
Fort Worth Star Telegram
The West Nile virus epidemic of 2012, the worst in a decade, may be notorious for yet another reason: The virus, in some cases, is attacking the brain more aggressively than in the past, raising the specter that it may have mutated into a nastier form ...

CDC: West Nile Toll Now 5054 Cases, 228 Deaths
U.S. News & World Report
7 (HealthDay News) -- This year's West Nile virus outbreak has now reached 5,05



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