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Clinical and Diagnostic Laboratory Immunology, September 1999, p. 705-712, Vol. 6, No. 5
PanBio Pty Ltd.1 and
Department of Immunology, School of Life Sciences, Queensland
University of Technology,5 Brisbane, Australia;
Armed Forces Research Institute of Medical
Sciences2 and Queen Sirikit National
Institute of Child Health (Bangkok Children's
Hospital),4 10400 Bangkok, Thailand; and
Wellcome Trust Clinical Research Unit3
and Pediatric Intensive Care Unit,6
Centre for Tropical Diseases, Cho Quan Hospital, 190 Ben Ham Tu,
Quan 5, Ho Chi Minh City, Vietnam
Received 11 February 1999/Returned for modification 25 March
1999/Accepted 22 June 1999
The performances of the MRL dengue fever virus immunoglobulin M
(IgM) capture enzyme-linked immunosorbent assay (ELISA) and the PanBio
Dengue Duo IgM capture and IgG capture ELISA were compared. Eighty sera
from patients with dengue virus infections, 24 sera from patients with
Japanese encephalitis (JE), and 78 sera from patients with
nonflavivirus infections, such as malaria, typhoid, leptospirosis, and
scrub typhus, were used. The MRL test showed superior sensitivity for
dengue virus infections (94 versus 89%), while the PanBio test showed
superior specificity for JE (79 versus 25%) and other infections (100 versus 91%). The PanBio ELISA showed better overall performance,
as assessed by the sum of sensitivity and specificity
(F value). When dengue virus and nonflavivirus infections were compared, F values of 189 and 185 were
obtained for the PanBio and MRL tests, respectively, while when dengue virus infections and JE were compared, F values of 168 and
119 were obtained. The results obtained with individual sera in the PanBio and MRL IgM ELISAs showed good correlation, but this analysis revealed that the cutoff value of the MRL test was set well below that
of the PanBio test. Comparing the sensitivity and specificity of the
tests at different cutoff values (receiver-operator analysis) revealed
that the MRL and PanBio IgM ELISAs performed similarly in
distinguishing dengue virus from nonflavivirus infections, although the
PanBio IgM ELISA showed significantly better distinction between dengue
virus infections and JE. The implications of these findings for the
laboratory diagnosis of dengue are discussed.
1071-412X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Comparison of PanBio Dengue Duo Enzyme-Linked Immunosorbent Assay
(ELISA) and MRL Dengue Fever Virus Immunoglobulin M Capture ELISA for
Diagnosis of Dengue Virus Infections in Southeast Asia


*
Corresponding author. Mailing address: PanBio Pty Ltd.,
116 Lutwyche Rd., Windsor 4030, Queensland, Australia. Phone:
61-7-33571177. Fax: 61-7-33571222. E-mail:
peter_devine{at}panbio.com.au.
Present address: Walter Reed Army Medical Center, Washington, DC 20307.
Present address: Department of Neurological Science, University of
Liverpool, Walton Centre for Neurology and Neurosurgery, Fazakerley,
Liverpool L9 7LJ, United Kingdom.
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