An Outbreak of Equine Encephalomyelitis, Eastern Type, in Southwestern Louisiana

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Abstract
The virus of eastern equine encephalomyelitis was recovered from the brains of 2 human and 4 equine fatal cases occurring in an outbreak of encephalomyelitis in s.-w. Louisiana. Positive neutralization tests to this virus were obtained with sera of 2 chickens, 1 dog, and 31 human and equine cases and their contacts, while those of 2 chickens, 1 goose, 1 plgeon and 2 cows were only weakly positive. Antibodies to the western equine virus were found in the sera of 1 dog, 8 horses and 19 chickens and to a very slight degree in the sera of 2 humans and 2 cows.