Serologic Characterization of the Fort Bragg Leptospira

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Abstract
Summary 1. Results of cross agglutination-lysis and cross agglutinin-absorption studies indicate that the etiologic agent of Fort Bragg Fever is closely related to the other members of the leptospiral serogroup autumnalis. 2. Agglutinin-absorption studies with all members of the serogroup autumnalis reveal that the agglutinins responsible for strain specificity are not completely removed when absorbed with any of the other strains. 3. Classification of these leptospiral strains on the basis of a modified adoption of Wolff's scheme(5) designates autumnalis Akiyami A as the “incomplete” biotype of the Fort Bragg isolate and discloses L. autumnalis A Rach-mat, in addition to L. bangkinang, as a heterologous serotype member of the autumnalis group. 4. The Fort Bragg isolate is therefore designated as L. autumnalis, Fort Bragg.
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