%0 Journal Article %T Multiple-Clade H5N1 Influenza Split Vaccine Elicits Broad Cross Protection against Lethal Influenza Virus Challenge in Mice by Intranasal Vaccination %A Penghui Yang %A Yueqiang Duan %A Peirui Zhang %A Zhiwei Li %A Cheng Wang %A Mei Dong %A Chong Tang %A Li Xing %A Hongjing Gu %A Zhongpeng Zhao %A Xiufan Liu %A Shaogeng Zhang %A Xiliang Wang %J PLOS ONE %D 2012 %I Public Library of Science (PLoS) %R 10.1371/journal.pone.0030252 %X The increase in recent outbreaks and unpredictable changes of highly pathogenic avian influenza (HPAI) H5N1 in birds and humans highlights the urgent need to develop a cross-protective H5N1 vaccine. We here report our development of a multiple-clade H5N1 influenza vaccine tested for immunogenicity and efficacy to confer cross-protection in an animal model. %U http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0030252