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. 2015 Sep;21(9):1562-7.
doi: 10.3201/eid2109.150295.

Encephalitis Surveillance through the Emerging Infections Program, 1997-2010

Karen C Bloch, Carol A Glaser

Encephalitis Surveillance through the Emerging Infections Program, 1997-2010

Karen C Bloch et al. Emerg Infect Dis. 2015 Sep.

Abstract

Encephalitis is a devastating illness that commonly causes neurologic disability and has a case fatality rate >5% in the United States. An etiologic agent is identified in <50% of cases, making diagnosis challenging. The Centers for Disease Control and Prevention Emerging Infections Program (EIP) Encephalitis Project established syndromic surveillance for encephalitis in New York, California, and Tennessee, with the primary goal of increased identification of causative agents and secondary goals of improvements in treatment and outcome. The project represents the largest cohort of patients with encephalitis studied to date and has influenced case definition and diagnostic evaluation of this condition. Results of this project have provided insight into well-established causal pathogens and identified newer causes of infectious and autoimmune encephalitis. The recognition of a possible relationship between enterovirus D68 and acute flaccid paralysis with myelitis underscores the need for ongoing vigilance for emerging causes of neurologic disease.

Keywords: EIP; Emerging Infections Program; bacteria; encephalitis; surveillance; viruses.

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