Study participants with ≥4-fold increases in microneutralization titers against avian influenza viruses at enrollment, 12-month and 24-month follow-up, and associated risk factors.
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资源简介：
H6N1 = A/Teal/Hong Kong/w312/97(H6N1); H9N2 = A/Hong Kong/1073/1999(H9N2).H12N5 = A/Duck/Alberta/60/1976(H12N5).*Lost to follow-up.†Respiratory illness (fever and cough or sore throat) in previous 12 months.
创建时间：
2015-12-02
