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Volume 18, Number 6—June 2012

Dispatch

Avian Influenza A (H5N1) Virus Antibodies in Poultry Cullers, South Korea, 2003–2004

Donghyok Kwon, Joo-Yeon Lee, Wooyoung Choi, Jang-Hoon Choi, Yoon-Seok Chung, Nam-Joo Lee, Hyang-Min Cheong, Jacqueline M. Katz, Hee-Bok Oh, Haewol Cho, and Chun KangComments to Author 
Author affiliations: Korea Centers for Disease Control and Prevention, Osong, South Korea (D. Kwon, J.-Y. Lee, W. Choi, J.-H. Choi, Y.-S. Chung, N.-J. Lee, H.-M. Cheong, H.-B. Oh, H. Cho, C. Kang); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (J.M. Katz)

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Table 2

Characteristics and serologic results of persons with influenza (H5N1) antibody–positive serum samples, South Korea, 2003–2004*

Participant no.† Age, y Occupation Serologic results‡
Neutralizing antibody titer Horse HI titer Western blot§
1 48 Fireman <20/80 <10/80 −/+
2 23 Soldier <20/80 <10/160 −/+
3 23 Soldier 20/640 <10/40 +/+
4 23 Soldier 20/160 <10/<10 +/+
5 25 Soldier 20/160 <10/<10 ±/+
6 48 Provincial officer 160 <10 +
7 22 Soldier 80 <10 +
8 36 Provincial officer 80 160 +
9 45 Animal husbandryman 80 80 +

*All 9 persons were male, worked as cullers, and had no signs or symptoms of respiratory illness. HI, hemagglutination inhibition assay; +, positive; −, negative; ±, equivocal.
†Cases 1–5 were confirmed at the Korea Centers for Disease Control and Prevention with paired samples and 6–9 were confirmed at the US Centers for Disease Control and Prevention with a single sample.
‡Results for participants 1–5 were obtained from 2 samples and for 6–9 from 1 sample.
§Western blot analyses were performed by using purified baculovirus-expressed influenza A/Vietnam/1203/2004 virus hemagglutinin as antigen.

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