The present invention relates to novel hemagglutinin H5 proteins, nucleic acids and vectors encoding for those as well as vaccines comprising any of such H5 proteins, nucleic acids or vectors encoding for those H5 proteins. Moreover, the present invention also relates to the medicinal use of any of such compositions in humans and animals.本發明係關於新穎的血球凝集素H5蛋白、編碼彼等H5蛋白之核酸及載體,以及包含該等H5蛋白、編碼彼等H5蛋白之核酸或載體中之任一者的疫苗。此外,本發明亦係關於該等組合物中之任一者用於人類及動物之醫藥用途。