注射疫苗是死病毒,鼻喷疫苗是活病毒但是很弱。。。
http://video.google.com/videosearch?hl=zh-CN&rlz=1T4SKPB_zh-CNUS252US252&q=the+difference+of+h1n1+vaccine+nasal+or+inject%3F&lr=&um=1&ie=UTF-8&ei=EwXpSq6cD4ae8AaynaybDw&sa=X&oi=video_result_group&ct=title&resnum=4&ved=0CBoQqwQwAw#
http://video.google.com/videosearch?hl=zh-CN&rlz=1T4SKPB_zh-CNUS252US252&q=the+difference+of+h1n1+vaccine+nasal+or+inject%3F&lr=&um=1&ie=UTF-8&ei=EwXpSq6cD4ae8AaynaybDw&sa=X&oi=video_result_group&ct=title&resnum=4&ved=0CBoQqwQwAw#