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Volume 25, Number 4—April 2019

Seroprevalence of Zika and Dengue Virus Antibodies among Migrant Workers, Taiwan, 2017

Guey Chuen Perng, Tzu-Chuan Ho, Hsin-I Shih, Chia-Hua Lee, Pei-Wen Huang, Chih-Huan Chung, Nai-Ying Ko, Wen-Chien Ko, and Yu-Wen ChienComments to Author 
Author affiliations: National Cheng Kung University College of Medicine, Tainan, Taiwan (G.C. Perng, T.-C. Ho, H.-I. Shih, C.-H. Lee, P.-W. Huang, N.-Y. Ko, W.-C. Ko, Y.-W. Chien); National Cheng Kung University Hospital, Tainan (H.-I. Shih, N.-Y. Ko, W.-C. Ko, Y.-W. Chien); Kuo General Hospital, Tainan (C.-H. Chung)

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Table 2

Serostatus and neutralizing antibody titers for Zika virus and DENV among 11 migrant workers from Southeast Asia who were IgM and IgG positive for Zika virus, Taiwan, 2017*

Worker no., age, y/sex

Zika virus IgM
Zika virus IgG
90% PRNT titer
ID01, 21/F† + + + 10 10 <10 <10 149 399
ID02, 37/F + + + 609 1,401 40 <10 10 <10
ID03, 28/M + + + 138 505 11 149 438 <10
VN01, 34/M† + + + <10 40 <10 <10 40 160
PH01, 28/F† + + + 124 440 147 <10 1486 >2,560
PH02, 24/M† + + + <10 10 <10 <10 227 639
PH03, 24/F† + + + <10 <10 <10 <10 800 1279
TH01, 42/M + + + <10 40 <10 <10 107 143
TH02, 46/M† + + + <10 513 <10 <10 593 >2,560
TH03, 43/F + + + 405 310 40 40 10 1,215
TH04, 31/M + + + >2,560 1,360 1,600 10 1,468 1,599

*DENV, dengue virus; DENV-1–4, DENV serotypes 1–4; MR766, African Zika virus strain MR766; PRNT, plaque reduction neutralization test; Thai, 1 Zika virus isolate from a worker with an imported case acquired in Thailand.
†Six persons positive for Zika virus IgM fulfilled the criteria for laboratory confirmation of recent Zika virus infection adopted with definition according to the World Health Organization (7).

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