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Clinical and Diagnostic Laboratory Immunology, January 1998, p. 7-10, Vol. 5, No. 1
Department of Pathology, Singapore General
Hospital, Singapore, Singapore,1 and
PanBio Pty Ltd.,
Received 23 June 1997/Returned for modification 25 July
1997/Accepted 16 September 1997
A commercially available capture enzyme-linked immunosorbent assay
(ELISA) for the detection of specific immunoglobulin M (IgM) and IgG
antibodies produced during dengue infection (PanBio Dengue Duo) was
evaluated with paired serum specimens from 176 patients. Diagnosis was
based on a hemagglutination inhibition (HAI) assay, with patients
having either primary dengue (n = 90), secondary
dengue (n = 58), or no dengue (n = 28) infection. The combined use of IgM and IgG (sensitivity, 99%;
specificity, 96%) was superior to the use of IgM alone (sensitivity,
88%; specificity, 96%) or IgG alone (sensitivity, 85%; specificity,
96%). Furthermore, with the first serum sample of the pair of serum
samples, the ELISA was able to diagnose significantly more cases of
dengue than the HAI assay (55% versus 14%). The results of the IgG
capture ELISA gave a significant correlation with those of the HAI
assay (r = 0.91; P < 0.0001), and
the IgG capture ELISA could be used to distinguish between primary and
secondary infection. The best distinction was observed when an IgG
cutoff ratio of 3.0 was used, with 88% of primary infections and 98%
of secondary infections being correctly classified. This ELISA should
prove to be useful in the clinical diagnosis of dengue infection.
1071-412X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Evaluation of a Commercial Capture Enzyme-Linked
Immunosorbent Assay for Detection of Immunoglobulin M and G
Antibodies Produced during Dengue Infection
*
Corresponding author. Mailing address: B Floor,
Clinical Sciences, Royal Brisbane Hospital, Herston 4129, Queensland,
Australia. Phone: 61-7-33655202. Fax: 61-7-33655203.
Clinical and Diagnostic Laboratory Immunology, January 1998, p. 7-10, Vol. 5, No. 1
1071-412X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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