Flu How to prevent and treat this common illness. Guard your heart this flu season Mixing heart disease and flu is risky. (3 min. read) The Basics Flu infection facts Flu 101 How the flu spreads Cold or flu? Flu quiz More information Arthritis and the flu Handwashing can keep you healthy Too sick for school? Alzheimer’s disease: Vaccines linked to reduced risk Take a shot at beating the flu 5 key facts about flu vaccines Parents: How to avoid your child's illness Don't go to work with the flu Asthma: Take steps to avoid respiratory infections Related stories