人患豬流感human cases of Swine Flu
豬流感病毒 the H1N1 swine flu viruses H1N1
抗原變體antigenic variant
抗原變異 antigenic variation
抗原飄移 antigenic drift
抗原位移 antigenic shift
從病毒中獲取遺傳物質 scrambling/acquiring genetic materials from human and avian viruses
“混合器” “mixing vessel”
流感的亞型 influenza subtype
自然免疫力 natural immunity