Figure 1From: Serological report of influenza a (H7N9) infections among pigs in Southern ChinaThe geometric mean antibody titers of H9N2 AIV, H7N9 AIV and H1N1 pdm09 infections from January 2011 to November 2012 using a hemagglutination inhibition (HI) assay. Geometric mean titers and 95% CIs of antibody titers against subtype H9N2, H7N9 and H1N1 are indicated by long and black short horizontal lines. Samples titers indicated by borrow symbols.Back to article page