Protective Efficacy of H9N2 Avian Influenza Vaccines Inactivated by Ionizing Radiation Methods Administered by the Parenteral or Mucosal Routes.

The analysis based on the RRT-PCR data showed that the effect of SC vaccination upon challenge with 10 6 EID 50 mainly affects the initial phases of the infection by reducing the number of infected animals upon challenge for both the vaccines, albeit the effect of vaccination did not reach statistical significance ( Figure 3F , inset).

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