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Kinetic-dependent enzyme-linked immunosorbent assay for detection of antibodies to Legionella pneumophila.

ABSTRACT

A semiautomated, kinetic-dependent, enzyme-linked immunosorbent assay (K-ELISA) was adapted to detect serum antibodies to Legionella pneumophila. In a comparative study, 158 human serum samples (79 pairs) were tested by K-ELISA and the standard indirect immunofluorescence assay for determination of antibody levels to L. pneumophila serogroup 1. K-ELISA determinations were made by using a serogroup-specific antigen or a preparation (unfractionated antigen) which contained both common antigen and serogroup-specific reactivity. There was good correlation between the immunofluorescence assay and the K-ELISA by using either antigen, although greater correlation was achieved with the unfractionated antigen (coefficients of correlation, 0.894 with unfractionated antigen and 0.841 with serogroup-specific antigen). These results indicate that the K-ELISA is a reliable alternative to the immunofluorescence assay for serologically diagnosing legionellosis.

This article has been cited by other articles:

• Fields, B. S., Benson, R. F., Besser, R. E. (2002). Legionella and Legionnaires' Disease: 25 Years of Investigation. Clin. Microbiol. Rev. 15: 506-526 [Abstract] [Full Text]