Flu
Flu is a respiratory illness caused by viruses that infect the nose, throat, and sometimes the lungs. For older adults, especially those with chronic health conditions, the flu can be very serious and, in some cases, life-threatening. Learn about symptoms of the flu, ways to protect yourself, and what to do if you get sick.
Is it a Cold, the Flu, or COVID-19?
View an infographic on common symptoms of a cold, the flu, and COVID-19.
Flu and Older Adults
Learn all about flu—how it spreads, symptoms and treatment, the difference between cold, flu, and COVID-19, and the importance of getting a flu shot.
