Pandemic Influenza Overview.- Pandemic Influenza as a Current Threat.- Antigenic Cross-Reactivity Among H5N1 Viruses.- Current Approaches for Human and Avian Vaccine Production.- Seasonal Influenza Vaccines.- Generation and Characterization of Candidate Vaccine Viruses for Prepandemic Influenza Vaccines.- Live Attenuated Vaccines for Pandemic Influenza.- Influenza Vaccines for Avian Species.- Development and Application of Avian Influenza Vaccines in China.- Novel Vaccine Approaches.- Designing Vaccines for Pandemic Influenza.- Attenuated Influenza Virus Vaccines with Modified NS1 Proteins.- DNA Vaccines Against Influenza Viruses.- Recombinant Proteins Produced in Insect Cells.- Influenza Neuraminidase as a Vaccine Antigen.- Recombinant Vectors as Influenza Vaccines.- Influenza Virus-Like Particles as Pandemic Vaccines.- Pandemic Influenza Vaccines.- Adjuvants for Pandemic Influenza Vaccines.- Novel Approaches for Vaccine Delivery.- Transcutaneous Immunization with Influenza Vaccines.- Microneedle-Based Vaccines.- Vaccine Evaluation, Production and Distribution.- Animal Models for Evaluation of Influenza Vaccines.- Immunosenescence and Influenza Vaccine Efficacy.- Vaccines for Pandemic Influenza: Summary of Recent Clinical Trials.- Considerations for Licensure of Influenza Vaccines with Pandemic and Prepandemic Indications.- Strategies for Broad Global Access to Pandemic Influenza Vaccines.- Prioritization of Pandemic Influenza Vaccine: Rationale and Strategy for Decision Making.