[Vaccine Target] Influenza (seasonal) 3,000,000–5,000,000 [Worldwide deaths (2004)[11]] 250,000–500,000 [Chile] Yes1 [Cuba] Yes1 [USA] Yes1 [UK] Yes1 [Finland] Yes1 [Germany] Yes1 [Australia] Yes [Japan] Yes1 [Transmission] 
Airborne droplet
S a l i v a
A i r b o r n e d r o p l e t
P e n e t r a t i n g i n j u r y
B o d i l y f l u i d s
A i r b o r n e
F e c a l - o r a l
S e x u a l c o n t a c t
M o s q u i t o
T i c k