When to Stay Home from School  

    Flu Symptoms

    Influenza (flu) can cause mild to severe illness, and at times can lead to death. Flu is different from a cold. Flu usually comes on suddenly. People who have flu often feel some or all of these symptoms:

    • fever* or feeling feverish/chills
    • cough
    • sore throat
    • runny or stuffy nose
    • muscle or body aches
    • headaches
    • fatigue (tiredness)
    • some people may have vomiting and diarrhea, though this is more common in children than adults.

    *It’s important to note that not everyone with flu will have a fever.


    Signs and Symptoms Cold Influenza (Flu)
    Symptom onset Gradual Abrupt
    Fever Rare Usual; lasts 3-4 days
    Aches Slight Usual; often severe
    Chills Uncommon Fairly common
    Fatigue, weakness Sometimes Usual
    Sneezing Common Sometimes
    Chest discomfort, cough Mild to moderate; hacking cough Common; can be severe
    Stuffy nose Common Sometimes
    Sore throat Common Sometimes
    Headache Rare Common