The majority of viruses antigenically characterized so far have been shown to be A/Fujian/411/2002-like;the rest have been A/Panama/2007/99-like.

• 迄今为止，绝大多数流感病毒的抗原特征为A/Fujian/411/2002样，其余流感病毒的抗原特征为A/Panama/2007/99样。