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West Nile Virus

New West Nile Virus Findings from New York State Department of Health Described

Published in TB and Outbreaks Week, January 17th, 2012

2012 JAN 17 -- "West Nile virus (WWV) has caused disease in humans, equids, and birds at lower frequency in Mexico than in the United States. We hypothesized that the seemingly reduced virulence in Mexico was caused by attenuation of the Tabasco strain from southeastern Mexico, resulting in lower viremia than that caused by the Tecate strain from the more northern location of Baja California," scientists in Slingerlands, New York report.

"During 2006-2008, we tested this hypothesis in candidate avian amplifying hosts: domestic chickens, rock pigeons, house sparrows, great-tailed grackles, and clay-colored thrushes. Only great-tailed grackles and house...

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