Given the task definition and input, reply with output. In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.

Highly pathogenic avian H5N1 influenza viruses that are currently circulating in southeast Asia may acquire the potential to cause the next influenza pandemic. A number of alternate approaches are being pursued to generate cross-protective, dose-sparing, safe, and effective vaccines, as traditional vaccine approaches, i.e., embryonated egg-grown, are not immunogenic. We developed a replicationincompetent adenoviral vector-based, adjuvant-and egg-independent pandemic influenza vaccine strategy as a potential alternative to conventional egg-derived vaccines.
New Pre-pandemic Influenza Vaccines: An Egg-and Adjuvant- independent Human Adenoviral Vector Strategy Induces Long- lasting Protective Immune Responses in Mice