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Doctors expect the flu season to be rough this year, and with it comes another challenge: Figuring out whether your symptoms point to the flu, Covid-19 or something else.
Many symptoms of flu and Covid-19 are similar. Fever, fatigue and achiness can occur with both. The often-milder symptoms of a Covid-19 breakthrough infection in vaccinated people—sometimes including a runny nose or sneezing—can make it even harder to distinguish between the two illnesses, or from a cold or allergies.