West Nile virus: What you should know

POSTED: 09:05 AM PDT Aug 15, 2012 

The U.S. is experiencing one of its worst West Nile outbreaks in years. Here's what you need to know about this mosquito-borne virus.

West Nile - What is it
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What is it? West Nile virus is an infection transmitted by mosquitoes, although in very small cases it has been spread through blood transfusions, organ transplants, breastfeeding and during pregnancy from mother to baby.

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