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The Emergence of West Nile Virus Essay Preview: The Emergence of West Nile Virus Report this essay THE EMERGENCE OF WEST NILE VIRUS: A LITERATURE REVIEW Christopher Allan F. Reballos INTRODUCTION The year 1999 was an alarming year when an outbreak of arboviral encephalitis arrived in North America (Nosal and Pellizzari, 2003; Petersen et al,.