influenza emedicin.medscape.com http://emedicine.medscape.com/article/219557-overview http://emedicine.medscape.com/article/219557-overview http://emedicine.medscape.com/article/219557-overview antivirals are working Influenza Influenza Influenza http://emedicine.medscape.com/article/219557-overview#a6 http://emedicine.medscape.com/article/219557-overview Medscape Influenza Influenza http://emedicine.medscape.com/article/219557-overview#a0104 highest rates of flu-related mortality H1N1 virus http://emedicine.medscape.com/article/219557-overview http://emedicine.medscape.com/article/219557-overview