Sudden fever or chills
Muscle or body aches
Headache
Fatigue or extreme tiredness
Dry cough
Sore throat
Runny or stuffy nose
Loss of appetite
Feeling weak or worn out
Symptoms that come on quickly
Nausea, vomiting, or diarrhea, especially in children
If symptoms are severe, last more than a few days, or you have trouble breathing, seek medical care