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West Nile Virus

NPR's Joanne Silberner reports that public health officials in New Jersey are taking precautions to protect residents of the state against the spread of West Nile virus, which is carried by mosquitoes. The disease is spread from birds, such as crows, to humans, who may or may not be aware they've been infected. Symptoms range from headaches to coma, and, in some cases the virus can be deadly.

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