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Journal of Clinical Microbiology, February 1998, p. 427-436, Vol. 36, No. 2
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Impact of Strain Heterogeneity on Lyme Disease Serology in Europe: Comparison of Enzyme-Linked Immunosorbent Assays Using Different Species of Borrelia burgdorferi Sensu Lato

Ulrike Hauser,1,* Heide Krahl,1 Helmut Peters,2 Volker Fingerle,1 and Bettina Wilske1

Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie, Ludwig-Maximilians-Universität München, D-80336 Munich,1 and Behring Diagnostics GmbH, D-35001 Marburg,2 Germany

Received 20 June 1997/Returned for modification 31 July 1997/Accepted 4 November 1997

For the standardization of serological tests for Lyme borreliosis (LB) in Europe, the influence of the heterogeneity of Borrelia burgdorferi sensu lato must be assessed in detail. For this study four immunoglobulin M (IgM) and IgG enzyme-linked immunosorbent assays (ELISAs) with octyl-beta -D-glucopyranoside extracts of strains PKo (Borrelia afzelii), PBi (Borrelia garinii), and PKa2 and B31 (both B. burgdorferi sensu stricto) were compared. Strains PKo, PBi, and PKa2 at the passages used for antigen preparations abundantly expressed outer surface protein C (OspC), whereas strain B31 at the passage used for antigen preparation did not express OspC. Sera (all from Germany) from 222 patients with clinically defined LB of all stages, 133 blood donors, and 458 forest workers were tested. None of the forest workers had symptoms consistent with LB at the time that the samples were collected. For IgM tests, receiver operating characteristic curves demonstrated that discrimination between sera from patients and blood donors was best with strain PKo and worst with strain B31. The discriminatory abilities of the four IgG ELISAs were similar in a diagnostically reasonable specificity range (90 to 100%). More than 20% of the sera from forest workers reacted strongly in the PKo IgG ELISA (optical density value, >1.5; other assays, less than 8%). Western blots of the sera with the most discrepant ELISA results revealed almost exclusive reactivity with p17. This highly immunogenic antigen is only expressed by strain PKo. This observation might be important for the development of assays enabling discrimination between asymptomatic or previous infection and active disease.

* Corresponding author. Mailing address: Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie der Ludwig-Maximilians-Universität München, Pettenkoferstr. 9a, D-80336 Munich, Germany. Phone: 0049-89-51605225. Fax: 0049-89-51604757. E-mail: hauser{at}m3401.mpk.med.uni-muenchen.de.

Journal of Clinical Microbiology, February 1998, p. 427-436, Vol. 36, No. 2
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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