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Figure 3.
Pre-vaccination (Day 1) and post-vaccination (Day 22) geometric mean titre against a) A/H1N1, b) A/H3N2 and c) B viral strains in subjects without pre-vaccination immunoprotection.
Li et al. Immunity & Ageing 2008 5:2 doi:10.1186/1742-4933-5-2
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