Common flu symptoms include: • Fever • Chills • Cough • Runny or stuffy nose • Sore throat • Headache • Muscle or body aches • Weakness • Fatigue • Ear pain, vomiting, or diarrhea in children • Some side effects of the flu vaccine (fever, headache, fatigue) can look similar to COVID-19 symptoms. If these occur, they usually begin soon after vaccination and last 1-2 days. Seek health care advice if symptoms persist.