Centers for Disease Control (CDC)

CDC: Find a COVID-19 vaccine near you.

CDC Centers for Disease Control and Prevention About COVID -19 

Similarities and Differences Between Flu and COVID-19

Flu and COVID-19 are both contagious respiratory illnesses, but they are caused by different 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 alone, and testing may be needed to help confirm a diagnosis. Flu and COVID-19 share many characteristics, but there are some key differences between the two.


World Health Organization (WHO)


Colorado Department of Public Health & Environment (CDPHE)