The flu and COVID-19 are both contagious infections caused by different viruses that spread through respiratory droplets. They can cause mild to severe illnesses and similar symptoms, including fever, cough, body aches and fatigue, which are sometimes difficult to distinguish due to their similarities. During the COVID-19 pandemic, it is more important than ever to get vaccinated for the flu and COVID-19 to prevent severe illness, including hospitalization and/or death. Getting vaccinated not only protects you but also those around you.