Figure 5

Correlations of antibody levels in the nasopharyngeal (NP) to middle ear fluid (MEF). Paired NP and MEF samples simultaneously collected from the same visit of the same children, and correlation of immunoglobulin G (IgG) and IgA levels in NP to MEF was analyzed using the Spearman’s coefficient. (a), Anti-PhtD IgG; (b), anti-PcpA IgG; (c), anti-PlyD1 IgG; (d), anti-PhtD IgA; (e), anti-PcpA IgA; (f), anti-PlyD1 IgA.