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West Nile virus necklace | gold vermeil gold_plated naturalists who remember the scaleWest Nile virus necklace 18k gold vermeil West Nile virus emerged in North America in 1999 and crossed the continent faster than any arbovirus before it. Eighty percent of infections are silent, twenty percent cause fever, less than one percent become neuroinvasive. A virus that moves on mosquito wings and on human travel, demonstrating how quickly the invisible can spread. The Science of West Nile Virus West Nile virus is a flavivirus with an 11 kb