Influenza, known as the flu, is a contagious respiratory illness caused by a virus. Flu symptoms can include fever, body aches, chills, headache, congestion and coughing. These can be similar to common cold symptoms, but the flu can be very serious and can lead to death. It's especially dangerous for babies, the elderly and people who are sick.
COVID-19, or coronavirus, shares some symptoms with the flu, and can also cause severe illness and death. If you think you may have coronavirus, consult our COVID-19 Screener for an initial assessment, or call your doctor.
During the COVID-19 pandemic, it's more important than ever to get a flu vaccine. While seasonal flu cases have declined slightly due to the pandemic, immune protection remains critical and is your best chance to prevent coming down with the flu. And by staying healthy, you’ll leave room in the hospital for people who are seriously ill.