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Journal of Clinical Microbiology, January 2000, p. 313-317, Vol. 38, No. 1
Microbiology Research Laboratory1
and Section of Infectious Diseases,3
Gundersen Lutheran Medical Center, La Crosse, Wisconsin 54601, and Department of Medical Microbiology and
Immunology2 and Wisconsin State
Laboratory of Hygiene,4 University of Wisconsin,
Madison, Wisconsin 53706
Received 21 May 1999/Returned for modification 23 September
1999/Accepted 14 October 1999
A recombinant Lyme borreliosis vaccine consisting of outer surface
protein A (OspA) is commercially available for vaccination of humans
against infection with Borrelia burgdorferi. Vaccination with OspA induces an antibody response that makes serologic
interpretation of infection with B. burgdorferi difficult,
especially by screening tests based on whole-cell preparations of
B. burgdorferi. We show that an enzyme-linked immunosorbent
assay with B. burgdorferi sensu stricto 50772, which lacks
the plasmid encoding OspA and OspB, or a full-length recombinant OspC
protein can identify patients infected with B. burgdorferi.
We found that 69 and 65% of serum samples from patients with
case-defined early Lyme borreliosis had anti-B. burgdorferi
sensu stricto 50772 and anti-OspC reactivities, respectively. In
addition, little or no reactivity was detected with sera obtained from
individuals vaccinated with OspA. Unfortunately, 51 and 33% of sera
from healthy patients and sera from patients with other illnesses were
also reactive against B. burgdorferi sensu stricto 50772 and OspC, respectively. Although these assays can discriminate B. burgdorferi infection from vaccination with OspA, their lack of
specificity highlights the necessity for confirming equivocal or
positive reactivities with more specific serodiagnostic tests.
0095-1137/0/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Evaluation of Whole-Cell and OspC Enzyme-Linked Immunosorbent
Assays for Discrimination of Early Lyme Borreliosis from OspA
Vaccination

*
Corresponding author. Mailing address: Microbiology
Research Laboratory, Gundersen Lutheran Medical Center, 1836 South
Ave., La Crosse, WI 54601. Phone: (608) 782-7300, ext. 3743. Fax: (608) 791-6602. E-mail: slovrich{at}centuryinter.net.
Present address: R&D Systems, Minneapolis, MN 55413.
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