A Fusion Fragment Encoding an Enfluenza A Virus Hemagglutinin and Method for Preparing the Same

The present invention relates to a fusion fragment characterised by an influenza A virus hemagglutinin gene; a Lactococcus lactis N-acetylmuramidase gene; wherein the influenza A virus hemagglutinin gene and the Lactococcus lactis N-acetylmuramidase gene are joined by a peptide linker. A method for preparing a fusion fragment is also provided in the present invention.