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Efficacy and synergy of live-attenuated and inactivated influenza vaccines in young chickens

Fig 9

Effect of age and prime-boost vaccination on avidity index of serum HI antibodies.

Serum samples collected at 2 or 5 weeks post vaccination at 1 day of age or 2 weeks post boost-vaccination (5 weeks of age) were tested for their avidity as previously described [43]. (A) Age effect. (B) Prime-boost effect. Groups are arranged as described in Fig 5. Different letters inside the plot indicate significant differences between groups (p<0.05).

Fig 9

doi: https://doi.org/10.1371/journal.pone.0195285.g009