Influenza (flu) is a contagious respiratory illness caused by influenza viruses. There are two main types of flu viruses: types A and B. These viruses spread to people throughout the year and are responsible for the seasonal flu epidemics during the fall and winter months. Flu and COVID-19 are both contagious respiratory illnesses, but they are caused by different viruses. COVID-19 is caused by infection with a coronavirus (called SARS-CoV-2) first identified in 2019, while flu is caused by infection with influenza viruses. Because some of the symptoms of flu and COVID-19 are similar, it may be hard to tell the difference between them based on symptoms. Testing for either virus may be needed to confirm a diagnosis.

The most important step in preventing the flu is to get a flu shot each year - and this is not the year to skip it! The Centers for Disease Control and Prevention (CDC) recommends a yearly flu vaccine for everyone 6 months of age and older as the first and most important step in protecting against this serious disease. Flu vaccines have been updated to better match circulating viruses for the 2023 - 2024 flu season. Vaccination is particularly important for people who are at high risk of serious complications from influenza. Please speak with your healthcare provider for more information on vaccination recommendations.