Anyone can get the flu. It usually lasts about a week and often requires bed rest for a few days. Some people are at high risk for developing flu-related complications, such as pneumonia. They include children, older adults and people with some chronic diseases (including rheumatoid arthritis and psoriatic arthritis). During the 2017-2018 flu season, close to 1 million people were hospitalized for the flu, and there were 79,400 deaths from the flu.