Abstract
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. West Nile virus (WNV) is the leading cause of domestically acquired arboviral disease in the United States (1). However, several other arboviruses also cause sporadic cases and seasonal outbreaks. This report summarizes surveillance data reported to CDC in 2014 for WNV and other nationally notifiable arboviruses, excluding dengue. Forty-two states and the District of Columbia (DC) reported 2,205 cases of WNV disease. Of these, 1,347 (61%) were classified as WNV neuroinvasive disease (e.g., meningitis, encephalitis, or acute flaccid paralysis), for a national incidence of 0.42 cases per 100,000 population. After WNV, the next most commonly reported cause of arboviral disease was La Crosse virus (80 cases), followed by Jamestown Canyon virus (11), St. Louis encephalitis virus (10), Powassan virus (8), and Eastern equine encephalitis virus (8). WNV and other arboviruses cause serious illness in substantial numbers of persons each year. Maintaining surveillance programs is important to help direct prevention activities.
Highlights
What is already known about this topic
What is added by this report
eastern equine encephalitis virus transmission via organ transplantation was reported for the first time
Summary
MD, Director Anne Schuchat, MD, Principal Deputy Director Leslie Dauphin, PhD, Acting Associate Director for Science Joanne Cono, MD, ScM, Director, Office of Science Quality Chesley L. MD, MPH, Deputy Director for Public Health Scientific Services William R. Mac Kenzie, MD, Acting Director, Center for Surveillance, Epidemiology, and Laboratory Services. PhD, MPH, Acting Editor in Chief, Executive Editor Jacqueline Gindler, MD, Editor. Mary Dott, MD, MPH, Online Editor Teresa F. Weatherwax, Lead Technical Writer-Editor Glenn Damon, Soumya Dunworth, PhD, Teresa M. US Department of Health and Human Services/Centers for Disease Control and Prevention
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