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. 2011 Jan;17(1):76–78. doi: 10.3201/eid1701.100014

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Seroprotection rates determined by hemagglutination inhibition (HI) assay (white bars) or microneutralization (MN) assay (gray bars) and geometric mean titer (GMT) of antibodies against pandemic (H1N1) 2009 virus in each 10-year age cohort, Taiwan, 2007–2008.