Learn about common signs and symptoms for COVID-19 and the flu.
COVID-19 and the flu share many of the same symptoms, which can make it hard to know which virus you or a loved one has.
This fact sheet answers common questions about how COVID-19 compares to the flu, such as:
- How soon do symptoms start after I get the virus from someone?
- How soon am I contagious after I get the virus (able to spread the virus to others)?
- What serious health problems can COVID-19 and the flu cause?
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