流感病毒

influenza virus / flu virus

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade

flu / influenza

to feel / to move / to touch / to affect / feeling / emotion / (suffix) sense of ~

illness / CL:場|场[chang2] / disease / to fall ill / defect

virus

poison / to poison / poisonous / malicious / cruel / fierce / narcotics

swine influenza virus (SIV)