FUSION PROTEINS

摘要

A DNA sequence encoding a fusion protein comprising influenza virus HA, at a site of which normally occupied by a natural antigenic epitope thereof a different antigenic epitope is provided, is incorporated in a vector which is capable of expressing the fusion protein when provided in a eucaryotic host. When in the form of a viral vector such as a recombinant vaccinia virus, the vector can be used as a vaccine. Alternatively, the fusion protein expressed by the host can be recovered and provided as a vaccine.