Influenza transmission: research needs for informing infection control policies and practice.
D015340:Epidemiologic Research Design; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000635:transmission*; D038622:Internationality; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians'; D011640:Public Policy; D012107:Research Design