title: West Nile Virus and Other Nationally Notifiable Arboviral Diseases - United States, 2015.
abstract: Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. The leading cause of domestically acquired arboviral disease in the United States is West Nile virus (WNV) (1). Other arboviruses, including La Crosse, St. Louis encephalitis, Jamestown Canyon, Powassan, and eastern equine encephalitis viruses, also cause sporadic cases and outbreaks. This report summarizes surveillance data reported to CDC in 2015 for nationally notifiable arboviruses. It excludes dengue, chikungunya, and Zika viruses, which are primarily nondomestic viruses typically acquired through travel (and are addressed in other CDC reports). In 2015, 45 states and the District of Columbia (DC) reported 2,282 cases of domestic arboviral disease. Among these cases, 2,175 (95%) were WNV disease and 1,455 (67%) of those were classified as neuroinvasive disease (meningitis, encephalitis, or acute flaccid paralysis). The national incidence of WNV neuroinvasive disease was 0.45 cases per 100,000 population. Because arboviral diseases continue to cause serious illness, maintaining surveillance is important to direct prevention activities such as reduction of vector populations and screening of blood donors.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Krow-Lucal
authors.forename: Nicole P
authors.initials: NP
authors.lastname: Lindsey
authors.forename: Jennifer
authors.initials: J
authors.lastname: Lehman
authors.forename: Marc
authors.initials: M
authors.lastname: Fischer
authors.forename: J Erin
authors.initials: JE
authors.lastname: Staples
mesh_terms: D000293:Adolescent; D000328:Adult; D001102:Arbovirus Infections / Q000453:epidemiology*; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology*; D055815:Young Adult