The value of IgG to IgM ratio in predicting secondary dengue infection

  • I Putu Gede Karyana
  • Hendra Santoso
  • Bagus Ngurah Putu Arhana
Keywords: dengue hemorrhagic fever (DHF), primary and secondary infection, hemagglutination inhibition (HI) test, ratio of IgG, IgM

Abstract

Background The determination of primary or secondary dengue
infection using hemagglutination inhibition (HI) test is time-con-
suming. The IgG to IgM ratio which can be obtained earlier was
used by several studies to differentiate secondary from primary
infection, but they still reported various cut-off points.
Objective To find the diagnostic value and best cut off point of
IgG to IgM ratio for predicting secondary dengue infection.
Methods This was a prospective study carried out between July
2003 and June 2004. Children with suspected dengue hemor-
rhagic fever (DHF) were tested for HI during acute and convales-
cent phase. The IgG and IgM titer were examined during the acute
phase using ELISA method.
Results Sixty-two children were recruited, 48 with secondary in-
fection and 14 with primary infection. The prevalence of second-
ary infection was 77%. The best cut off point of the IgG to IgM ratio
to predict secondary infection was >1.1 with sensitivity of 87.5%,
specificity 92.9%, likelihood ratio 12.3, and post test probability
97.7%.
Conclusion The IgG to IgM ratio of >1.1 is a good predictor for
secondary infection

Author Biographies

I Putu Gede Karyana
Department of Child Health, Medical School, Udayana
University, Denpasar, Bali, Indonesia.
Hendra Santoso
Department of Child Health, Medical School, Udayana
University, Denpasar, Bali, Indonesia.
Bagus Ngurah Putu Arhana
Department of Child Health, Medical School, Udayana
University, Denpasar, Bali, Indonesia.

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Published
2016-10-18
How to Cite
1.
Karyana IP, Santoso H, Arhana BN. The value of IgG to IgM ratio in predicting secondary dengue infection. PI [Internet]. 18Oct.2016 [cited 6May2024];46(3):113-. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/911
Section
Articles
Received 2016-10-13
Accepted 2016-10-13
Published 2016-10-18