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Table 2 Anti-Zika virus immunoglobulin M and G levels of 13 participants with neutralizing antibodies to Zika virus epidemic) (N = 879)

From: Prevalence of Zika virus neutralizing antibodies in healthy adults in Vietnam during and after the Zika virus epidemic season: a longitudinal population-based survey

 ELISA resultsNeutralizing antibody titer (PRNT50)Neutralizing antibody titer (PRNT90)
Sample IDZIKV IgM(P/N ratio)DENV IgM(Index Value)Anti-ZIKV
NS1 IgG (P/N ratio)
ZIKVDENV-1DENV-2DENV-3DENV-4ZIKVDENV-1DENV-2DENV-3DENV-4
During epidemic (January 2017)
Z120aa3.30.12.2160320320< 20< 20< 2032080< 20< 20
Z140a2.30.34.7a8040320< 20< 20< 20< 2040< 20< 20
Z141a4.90.13.464016080< 20< 204080< 20< 20< 20
Z153ab2.80.33.2160< 20< 20< 20< 2040< 20< 20< 20< 20
Z476a4.70.543.9a640320128020< 2080320160< 20< 20
Z735a2.80.68.1320< 80< 80< 80< 8080< 80< 80< 80< 80
Z147aa1.6ND4.532080160204080< 2080< 20< 20
Z472a1.5ND46.151201601608040640804080< 20
Z606a1.6ND10.61280< 20< 20< 20< 20160< 20< 20< 20< 20
Z138a4.60.60.94032080< 20< 20< 20160< 20< 20< 20
Z420ab3.70.10.216016016020< 20202040< 20< 20
Z587a1.2ND0.232064064012801608032032064020
Z591a1.2ND0.664064064012808080320160640< 20
Post-epidemic (July 2018)
Z120baNDND2.3806401601280202032040320< 20
Z140bNDND5.2640< 20160< 202020< 2080< 20< 20
Z141bNDND2.764016020160< 208080< 2040< 20
Z476bNDND4.72560320320320801608080160< 20
Z735bNDND3.5803208032080< 203202016020
Z138bNDND0.58040< 2040< 20< 2020< 2020< 20
  1. DENV dengue virus, DENV1–4 dengue virus serotypes 1–4, ELISA enzyme-linked immunosorbent assay, IgG immunoglobulin G, IgM immunoglobulin M, N negative, ND not detected, P positive, PRNT50 plaque-reduction neutralization test with neutralization defined as ≥50% reduction in challenge virus plaque-forming units, PRNT90 plaque-reduction neutralization test with neutralization defined as ≥90% reduction in challenge virus plaque-forming units, ZIKV Zika virus
  2. Figures in bold indicate positive results.a ZIKV antibodies were determined using anti-ZIKV NS1 IgG ELISA (P/N ratio ≥ 2). b Z153 and Z420 were not available during the post endemic collection