Summary of Notifiable Diseases,
United States 1998

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Cases of eastern equine encephalitis among humans, often associated with high mortality rates (i. e., >20%) and severe neurologic sequelae, occur sporadically in the eastern United States. During 1998, four cases were reported from four states. During 1964 –1998, a median of 4 cases (average: 5) were reported each year in the United States.