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Teresita S. Elizan, MD; Jerome Schwartz, PhD; Melvin D. Yahr, MD; Jordi Casals, MD

Arch Neurol. 1978;35(5):257-260.

Abstract
• Serum and CSF from patients with classic von Economo's postencephalitic Parkinson's disease, idiopathic Parkinson's disease and non-Parkinsonian neurological controls were tested for hemagglutination-inhibition antibodies to 17 arboviruses. All 35 CSF specimens from patients with idiopathic Parkinson's disease and controls were negative (ie, no inhibition of hemagglutination) with all the antigens. Of the total of 124 serums from the three study groups, 105 were also negative with all antigens tested. The only positive results were given by 19 serum specimens against one or more of group B arbovirus antigens, and/or against Batai and western equine encephalomyelitis antigens. There were no definitive differences in the distribution of these positive serum titers among controls, idiopathic Parkinson's, and postencephalitic Parkinson's cases. A causal relationship of the arboviruses tested with either the classical postencephalitic or idiopathic Parkinson's disease is not supported by the results of this study.

Author Affiliations
From the Department of Neurology, (Drs Elizan, Schwartz, and Yahr) Mt Sinai School of Medicine of the City University of New York and the Department of Epidemiology and Public Health, (Dr Casals) Yale University School of Medicine, New Haven, Conn.

Footnotes
Accepted for publication Oct 13, 1977.

Reprint requests to Department of Neurology, Mt Sinai School of Medicine, Annenberg Building, Room 14-86B, Fifth Avenue and 100th Street, New York, NY 10029 (Dr Elizan).

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