MULTIVALENT AVIAN INFLUENZA VACCINES AND METHODS

摘要

The present invention provides vaccine compositions comprising at least two strains of avian influenza virus, wherein one of the strains has an H5 hemagglutinin subtype and the other strain has an H7 hemagglutinin subtype, and wherein at least one of the strains has an N4 neuraminidase subtype and neither strain has an N1 subtype. Also provided are vaccination methods that utilize the novel vaccine compositions of the invention. The compositions and methods of the present invention provide protection against infection with H5 and H7 influenza strains (e.g., H5N1 and H7N1) while at the same time facilitating the distinction between infected and vaccinated animals.