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Clinical and Diagnostic Laboratory Immunology, 03 1996, 200-204, Vol 3, No. 2
MP Amerein, D De Briel, B Jaulhac, P Meyer, H Monteil and Y Piemont
Serum samples from 35 cat scratch disease (CSD) patients, 180 control
patients (123 without lymph node enlargement and 57 with lymph node
enlargement not evoking CSD), and 102 nonpatient subjects (35 with cat
contact and 67 without cat contact) were tested by semiquantitative
indirect immunofluorescence assay for the presence of antibodies directed
to Afipia felis (ATCC 53690T) or Bartonella henselae (ATCC 49882T). The CSD
group had statistically higher antibody titers against B. henselae than the
control groups (P < 10(-5)), whereas no difference in A. felis antibody
titers was evidenced among all groups tested. Among the 317 serum samples
studied, the three with high A. felis antibody titers ( > or = 64) also
had high antibody titers against other alpha-2 proteobacteria. The value of
the indirect immunofluorescence assay with B. henselae antigen for the
diagnosis of CSD was as follows: for a cutoff of 32, sensitivity was 0.80,
specificity was 0.85, and the likelihood ratio was 5.1; for a cutoff of 64,
the likelihood ratio was 12.1. In summary, in France, CSD is associated
with high antibody titers against B. henselae, as previously described in
the United States. However, the causes for B. henselae seronegativity in
CSD patients and those for high antibody titers outside the typical
nosological frame of CSD still have to be identified.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
Diagnostic value of the indirect immunofluorescence assay in cat scratch disease with Bartonella henselae and Afipia felis antigens
Institut de Bacteriologie, Faculte de Medecine, Universite Louis- Pasteur, Strasbourg, France.
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